In 2023, the population density of Vietnam was around 303 people per square kilometer of land area. In that year, Vietnam's total population reached approximately 100.3 million. The country is among those with the highest population density in the Asia Pacific region, ranking 11th in 2020. Population density in Vietnam In comparison, Vietnam’s population density is roughly twice as much as China and Indonesia. The average population density in the world is at 59 inhabitants per square kilometer. The largest population within the country can be found in the Red River Delta and the Mekong River Delta. The most populated city is Ho Chi Minh City with roughly nine million inhabitants. Population growth in Vietnam Vietnam’s total population was forecast to surpass 100 million by 2050. Traditionally, Vietnamese families had an average of six children, while today, the birth rate is at two children per woman. This is due to an improving economy and higher living standards. In 2020, the population growth in Vietnam reached 0.90 percent, down from about three percent in the 1960s.

Vietnam VN: Coverage: Unemployment Benefits & Active Labour Market Programs: Poorest Quintile: % of Population data was reported at 24.405 % in 2014. This records a decrease from the previous number of 33.460 % for 2012. Vietnam VN: Coverage: Unemployment Benefits & Active Labour Market Programs: Poorest Quintile: % of Population data is updated yearly, averaging 28.932 % from Dec 2006 (Median) to 2014, with 4 observations. The data reached an all-time high of 40.363 % in 2010 and a record low of 18.896 % in 2006. Vietnam VN: Coverage: Unemployment Benefits & Active Labour Market Programs: Poorest Quintile: % of Population data remains active status in CEIC and is reported by World Bank. The data is categorized under Global Database’s Vietnam – Table VN.World Bank.WDI: Social Protection. Coverage of unemployment benefits and active labor market programs (ALMP) shows the percentage of population participating in unemployment compensation, severance pay, and early retirement due to labor market reasons, labor market services (intermediation), training (vocational, life skills, and cash for training), job rotation and job sharing, employment incentives and wage subsidies, supported employment and rehabilitation, and employment measures for the disabled. Estimates include both direct and indirect beneficiaries.; ; ASPIRE: The Atlas of Social Protection - Indicators of Resilience and Equity, The World Bank. Data are based on national representative household surveys. (datatopics.worldbank.org/aspire/); Simple average;

The total population of Vietnam was estimated at about 101.30 million people in 2024. Between 1980 and 2024, the total population rose by approximately 47.12 million people, though the increase followed an uneven trajectory rather than a consistent upward trend. The total population will steadily rise by around 4.68 million people over the period from 2024 to 2030, reflecting a clear upward trend.This indicator describes the total population in the country at hand. This total population of the country consists of all persons falling within the scope of the census.

Vietnam VN: Coverage: Unemployment Benefits & Active Labour Market Programs: 4th Quintile: % of Population data was reported at 3.947 % in 2014. This records a decrease from the previous number of 6.409 % for 2012. Vietnam VN: Coverage: Unemployment Benefits & Active Labour Market Programs: 4th Quintile: % of Population data is updated yearly, averaging 5.178 % from Dec 2006 (Median) to 2014, with 4 observations. The data reached an all-time high of 12.284 % in 2010 and a record low of 2.046 % in 2006. Vietnam VN: Coverage: Unemployment Benefits & Active Labour Market Programs: 4th Quintile: % of Population data remains active status in CEIC and is reported by World Bank. The data is categorized under Global Database’s Vietnam – Table VN.World Bank.WDI: Social Protection. Coverage of unemployment benefits and active labor market programs (ALMP) shows the percentage of population participating in unemployment compensation, severance pay, and early retirement due to labor market reasons, labor market services (intermediation), training (vocational, life skills, and cash for training), job rotation and job sharing, employment incentives and wage subsidies, supported employment and rehabilitation, and employment measures for the disabled. Estimates include both direct and indirect beneficiaries.; ; ASPIRE: The Atlas of Social Protection - Indicators of Resilience and Equity, The World Bank. Data are based on national representative household surveys. (datatopics.worldbank.org/aspire/); Simple average;

Population density per pixel at 100 metre resolution. WorldPop provides estimates of numbers of people residing in each 100x100m grid cell for every low and middle income country. Through ingegrating cencus, survey, satellite and GIS datasets in a flexible machine-learning framework, high resolution maps of population counts and densities for 2000-2020 are produced, along with accompanying metadata. DATASET: Alpha version 2010 and 2015 estimates of numbers of people per grid square, with national totals adjusted to match UN population division estimates (http://esa.un.org/wpp/) and remaining unadjusted. REGION: Asia SPATIAL RESOLUTION: 0.000833333 decimal degrees (approx 100m at the equator) PROJECTION: Geographic, WGS84 UNITS: Estimated persons per grid square MAPPING APPROACH: Land cover based, as described in: Linard, C., Gilbert, M., Snow, R.W., Noor, A.M. and Tatem, A.J., 2012, Population distribution, settlement patterns and accessibility across Africa in 2010, PLoS ONE, 7(2): e31743. FORMAT: Geotiff (zipped using 7-zip (open access tool): www.7-zip.org) FILENAMES: Example - AGO10adjv4.tif = Angola (AGO) population count map for 2010 (10) adjusted to match UN national estimates (adj), version 4 (v4). Population maps are updated to new versions when improved census or other input data become available. Vietnam data available from WorldPop here.

This dataset is about cities in Vietnam. It has 65 rows. It features 3 columns: country, and population.

In 2022, the urban population in Vietnam stood at approximately 37.4 million people. The six largest urban agglomerations include Hanoi, Hai Phong, Da Nang, Bien Hoa, Ho Chi Minh City, and Can Tho. On the other hand, Ben Tre, Thai Binh, and Bac Giang had the lowest rates of urbanization in the country.

Urbanization in Vietnam

The rapid urbanization in Vietnam results in a disproportionate population density between its urban and rural areas. For instance, in 2022, Ho Chi Minh City recorded a population density of 4,481 inhabitants per square kilometer, nearly 15 times the country's average population density in the same year. The urban population is consistently increasing due to the country’s economic reforms and infrastructure development, as well as higher living standards. For example, the monthly income per capita in urban areas is nearly half as much as that in rural areas. Nevertheless, the poverty rate in Vietnam has been consistently diminishing each year, roughly at 4.2 percent as of 2022.

Urban infrastructure in Vietnam

Vietnam has made significant progress in developing its urban infrastructure, especially in major cities like Hanoi and Ho Chi Minh City. The expansion of highways, seaports, and airports has enhanced domestic and international connectivity, as well as greatly contributed to the country’s logistic industry. For instance, Hanoi and Ho Chi Minh City are developing a metro system which is expected to be put into operation in 2024. The country has also invested in modern healthcare facilities, schools, and commercial centers. However, challenges such as traffic jams, limited public transportation services, and environmental pollution still require significant efforts to meet the growing demands of the Vietnamese urban population.

Abstract

The 1997 Viemam Demographic and Health Survey (VNDHS-II) is a nationally representative survey of 5,664 ever-married women age 15-49 selected from 205 sampling clusters throughout Vietnam. The VNDHS-II was designed to provide information on levels of fertility, family planning knowledge and use, infant and child mortality, and indicators of maternal and child health. The survey included a Community/Health Facility Questionnaire that was implemented in each of the sample clusters included in the women's survey. Fieldwork for the survey took place from July to October 1997. All provinces were separated into "project" and "non-project" groups to permit separate estimates for about one-third of provinces where the health infrastructure is being upgraded.

The primary objectives of the second Vietnam National Demographic and Health Survey (VNDHS-II) in 1997 were to provide up-to-date information on fertility levels, fertility preferences, awareness and use of family planning methods, breastfeeding practices, early childhood mortality, child health and knowledge of AIDS.

VNDHS-II data confirm the patterns of declining fertility and increasing use of contraception that were observed between the 1988 VNDHS-I and the 1994 lntercensal Demographic Survey (ICDS-94).

Geographic coverage

The 1997 Viemam Demographic and Health Survey (VNDHS-II) is a nationally representative survey. Itwas designed to provide separate estimates for the whole country, for urban and rural areas, for 18 project provinces, and for the remaining non-project provinces as well. Project provinces refer to 18 focus provinces targeted for the strengthening of their primary health care systems by the Government's Population and Family Health Project to be implemented over a period of seven years, from 1996 to 2002 (At the outset of this project there were 15 focus provinces, which became 18 by the creation of 3 new provinces from the initial set of 15). These provinces were selected according to criteria based on relatively low health and family planning status, no substantial family planning donor presence, and regional spread. These criteria resulted in the selection of the country's poorer provinces. Nine of these provinces have significant proportions of ethnic minorities among their population.

Analysis unit

• Household
• Women age 15-49

Universe

The population covered by the 1997 VNDHS is defined as the universe of all women age 15-49 in Vietnam.

Kind of data

Sample survey data

Sampling procedure

The Second Vietnam Demographic and Health Survey (VNDHS-1I) covers the population residing in private households in the country. The design for the VNDHS-II calls for a representative probability sample of approximately 5,500 completed individual interviews of ever-married women between the ages of 15 and 49. It was designed principally to produce reliable estimates of demographic rates (particularly fertility and childhood mortality rates), of maternal and child health indicators, and of contraceptive knowledge and use, for the country as a whole, for urban and the rural areas separately, and for the group of 18 project provinces. These 18 provinces are in the following geographic regions:

Six of the 18 project provinces are new provinces that will, in the near future, be formed out of three old provinces: Bac Can and Thai, Nguyen from Bac Thai; Hai Duong and Hung Yen from Hal Hung; Nam Dinh and Ha Nam from Nam Ha.

Northern Uplands: Tuyen Quang, Lai Chau, Lao Cai, Bac Can and Thai Nguyen.
Red River Delta: Hai Phong, Hai Duong, Hung Yen, Nam Dinh and Ha Nam.
North Central: Thanh Hoa and Thua Thien-Hue.
Central Highlands: Dac Lac and Lam Dong.
Mekong River Delta: Dong Thap, Vinh Long, Tra Vinh and Kien Giang.

Since the formation of the new provinces has not been formalized and no population data exist for them, this report will only refer to 15 project provinces out of 53 provinces in Vietnam (instead of 18 project provinces out of 61 provinces).

SAMPLING FRAME

The sampling frame for the VNDHS-II was the sample of the 1996 Vietnam Multi-Round Survey (VNMRS), conducted bi-annually by the General Statistical Office (GSO). A thorough evaluation of this sample was necessary to ensure that the sample was representative of the country, before it was used for the VNDHS-II.

The sample design for the VNMRS was developed by GSO with technical assistance provided by Mr. Anthony Turney, sampling specialist of the United Nations Statistics Division. The VNMRS sample was stratified and selected in two stages. Within each province, stratification was geographic by urban- rural residence. Sample selection was done independently for each province.

In the first stage, primary sampling units (PSUs) corresponding to communes (rural areas) and blocks (urban areas) were selected using equal probability systematic random selection (EPSEM), since no recent population data on communes and blocks existed that could be used for selection with probability proportional to size. The assumption underlying the decision to use EPSEM was that, within each province, the majority of communes and blocks vary little in population size, with the exception of a few communes; i.e., within each province, most communes and blocks have a population size that is close to the average for the province. In each province, the number of selected communes/blocks was proportional to the urban-rural population in the province. The total number of communes/blocks selected for the VNMRS was 1,662 with tbe number of communes/blocks in each province varying from 26 to 43 according to the size of the province. After the communes/blocks were selected, a field operation was mounted by GSO to create enumeration areas (EAs) in each selected commune/block. The number of EAs that was created in each commune/block was based on the number of households in the commune/block divided by the standard EA size which was set at 150 households. The list of EAs for the whole province was then ordered geographically by commune/block and used for the second stage selection. Thirty EAs were selected in each province with equal probability from a random start, for a total of 1,590 EAs. Because of this method of systematic random selection, communes/blocks that were large in size had one or rnore EAs selected into the sample while communes/blocks that were very small in size were excluded from the sample. In each selected EA, all households were interviewed for the VNMRS.

To evaluate the representativity of the VNMRS, EA weights were calculated based on the selection probability at tile various sampling stages of the VNMRS: also, the percent distribution of households in the VNMRS across urban/rural strata and provinces was estimated and compared with the percent distribution of the 1996 population across the same strata. The distribution obtaiued from the VNMRS agrees closely with that of the 1996 population

CHARACTERISTICS OF THE VNDHS-II SAMPLE

The sample for the VNDHS-II was stratified and selected in two stages. There were two principal sampling domains: the group of 15 project provinces and the group of other provinces. In the group of project provinces, all 15 provinces were included in the salnple. At the first stage. 70 PSUs corresponding to the EAs as defined in the VNMRS were selected from the VNMRS with equal probability, the size of the EA in the VNMRS being very uniform. and hence sampling with probability proportional to size (PPS) was not necessary. The list of households interviewed for the VNMRS (updated when necessary) were used as the frame for the second-stage sampling, in which households were selected for interview during the main survey fieldwork. Ever-married women between the ages of 15 and 49 were identified in these households and interviewed.

In the group of other provinces, an additional stage was added in order to reduce field costs although this might increase sampling errors. In the first stage, 20 provinces, serving as PSUs. were selected with PPS. the size being the population of the provinces estimated in 1997. In the second stage, 135 secondary sampling units corresponding to the EAs were selected in the same manner as for the project provinces.

Mode of data collection

Face-to-face

Research instrument

Three types of questionnaires were used in the VNDHS-II: the Household Questionnaire, the Individual Questionnaire, and the Community/Health Facility Questionnaire. A draft of the first two questionnaires was prepared using the DHS Model A Questionnaire. A user workshop was organized to discuss the contents of the questionnaires. Additions and modifications to the draft of the questionnaires were made after the user workshop and in consultation with staff from Macro International Inc., and with members of the Technical Working Group, who were convened for the purpose of providing technical assistance to the GSO in planning and conducting the survey. The questionnaires were developed in English and translated into and printed in Vietnamese. The draft questionnaires were pretested in two clusters in Hanoi City (one urban and one rural cluster).

a) The Household Questionnaire was used to enumerate all usual members and visitors in selected households and to collect information on age, sex, education, marital status, and relationship to the head of household. The main purpose of the Household Questionnaire was to identify women eligible for the individual interview (ever-married women age 15-49). In addition, the Household Questionnaire collected information on characteristics of the household such as the source of water, type of toilet facilities, material used for the floor and roof,

Vietnam VN: Coverage: Unemployment Benefits & Active Labour Market Programs: Richest Quintile: % of Population data was reported at 1.327 % in 2014. This records a decrease from the previous number of 3.010 % for 2012. Vietnam VN: Coverage: Unemployment Benefits & Active Labour Market Programs: Richest Quintile: % of Population data is updated yearly, averaging 2.168 % from Dec 2006 (Median) to 2014, with 4 observations. The data reached an all-time high of 3.334 % in 2010 and a record low of 0.379 % in 2006. Vietnam VN: Coverage: Unemployment Benefits & Active Labour Market Programs: Richest Quintile: % of Population data remains active status in CEIC and is reported by World Bank. The data is categorized under Global Database’s Vietnam – Table VN.World Bank.WDI: Social Protection. Coverage of unemployment benefits and active labor market programs (ALMP) shows the percentage of population participating in unemployment compensation, severance pay, and early retirement due to labor market reasons, labor market services (intermediation), training (vocational, life skills, and cash for training), job rotation and job sharing, employment incentives and wage subsidies, supported employment and rehabilitation, and employment measures for the disabled. Estimates include both direct and indirect beneficiaries.; ; ASPIRE: The Atlas of Social Protection - Indicators of Resilience and Equity, The World Bank. Data are based on national representative household surveys. (datatopics.worldbank.org/aspire/); Simple average;

The tourism sector GDP share in Vietnam was forecast to continuously increase between 2023 and 2028 by in total 1.9 percentage points. The share is estimated to amount to 7.41 percent in 2028. While the share was forecast to increase significant in the next years, the increase will slow down in the future.Depited is the economic contribution of the tourism sector in relation to the gross domestic product of the country or region at hand.The forecast has been adjusted for the expected impact of COVID-19.The shown data are an excerpt of Statista's Key Market Indicators (KMI). The KMI are a collection of primary and secondary indicators on the macro-economic, demographic and technological environment in more than 150 countries and regions worldwide. All input data are sourced from international institutions, national statistical offices, and trade associations. All data has been are processed to generate comparable datasets (see supplementary notes under details for more information).Find more key insights for the tourism sector GDP share in countries like Thailand and Cambodia.

In 2023, Vietnam’s service sector contributed the largest percentage to the country’s gross domestic product (GDP), at 42.54 percent. The service sector consists of the production of intangible goods to businesses and final consumers. Approximately 35.79 percent of the Vietnamese population works in the service sector. A young, working population About 69 percent of Vietnam’s 94 million inhabitants are part of the workforce, or between 15 to 64 years. The country’s workforce has a low unemployment rate of around 1.8 percent, and it is considered a strong regional economic leader, with a yearly economic growth rate of between 6 and 7 percent. Changes in Vietnam’s economy Vietnam’s economy has experienced several drastic shifts over the course of the country’s history, most recently during and following the events of the Indochina Wars: when the North and South were divided politically in the 1950’s, each adopted different economic ideologies, with a communist economy in the North and a capitalist economy in the South. After the country was reunified in 1975, the economy was joined into a socialist-oriented market economy, which has enacted several five-year plans and economic renewal campaigns in order to grow its national economy.

In 2022, the average monthly income per capita in Vietnam reached approximately *** million Vietnamese dong, indicating a slight increase from the previous year. 2020 and 2021 were particularly difficult years for the country’s population when per capita income decreased due to the negative impacts of the COVID-19 epidemic. Income distribution in Vietnam As a rapidly developing country in Southeast Asia, Vietnam has made significant efforts to improve income distribution among its population. One of the key factors contributing to a more balanced income distribution is Vietnam’s robust economic growth. Although the COVID-19 pandemic posed challenges to the country’s economy, Vietnam has been enjoying gradual GDP growth over the past few years, which explains the increase in job opportunities and higher wages for many Vietnamese citizens. Over the years, the Vietnamese government has implemented various policies and strategies to reduce the poverty rate and narrow the income gap in the country. However, the difference in income between urban and rural areas is inevitable. According to a governmental report in 2022, earnings per capita improved steadily across the whole country regardless of area; nonetheless, the monthly average income in urban areas was 1.5 times higher than that of their rural counterparts. Among the five major cities, Ha Noi and Ho Chi Minh City recorded the highest income per capita due to their higher living expenses compared to other areas. Monthly household expenditures in Vietnam While Vietnam has made noticeable progress in reducing poverty and improving income distribution, challenges remain in shaping the overall living standard for the population. The cost of living varies across different regions, with urban areas generally having higher expenses compared to rural areas. The largest portions of household expenditures are mainly used for nutrition, followed by housing, transportation, and healthcare. Education and entertainment also contributed to the monthly expenses, especially after the COVID-19 pandemic recovery and many restrictions were lifted in the country.

The population share with internet access in Vietnam was forecast to continuously increase between 2024 and 2029 by in total 10.5 percentage points. The internet penetration is estimated to amount to 98 percent in 2029. The penetration rate refers to the share of the total population having access to the internet via any means. The shown figures have been derived from survey data that has been processed to estimate missing demographics.The shown data are an excerpt of Statista's Key Market Indicators (KMI). The KMI are a collection of primary and secondary indicators on the macro-economic, demographic and technological environment in more than 150 countries and regions worldwide. All input data are sourced from international institutions, national statistical offices, and trade associations. All data has been are processed to generate comparable datasets (see supplementary notes under details for more information).Find more key insights for the population share with internet access in countries like Thailand and Laos.

According to a survey in 2022, clothing, footwear, and cosmetic products were the most popular online product categories according to online shoppers in Vietnam. Home appliances ranked second, with ** percent of respondents having purchased these items online. Online shopping on the rise in Vietnam In 2022, around *** percent of total retail sales in Vietnam came from e-commerce, equaling over **** billion U.S. dollars. The growth of this sector has been recorded year-on-year during the last decade in the country. In the same year, over half of the Vietnamese population reported having purchased consumer goods online. Not only are there more people buying products online, but the average amount spent per consumer on e-commerce channels has also been increasing exponentially in Vietnam. Vietnam’s internet economy Vietnam had the third largest internet economy in Southeast Asia, behind Indonesia and Thailand, with a total market value of ** billion U.S. dollars. While e-commerce accounted for the lion’s share, other segments within the internet economy in the country have been growing fast in recent years. For instance, the COVID-19 pandemic has made online entertainment the new normal for people across different age groups, contributing to the substantial increase in online media market value in Vietnam. Furthermore, after the pandemic, food delivery, ride-hailing, and online travel have continued to benefit from the shift in consumer preferences towards online products and services.

Poverty headcount ratio at national poverty lines (% of population) in Vietnam was reported at 4.3 % in 2022, according to the World Bank collection of development indicators, compiled from officially recognized sources. Vietnam - Poverty headcount ratio at national poverty line (% of population) - actual values, historical data, forecasts and projections were sourced from the World Bank on July of 2025.

Vietnam VN: Coverage: Social Safety Net Programs: 4th Quintile: % of Population data was reported at 5.358 % in 2014. This records a decrease from the previous number of 35.466 % for 2012. Vietnam VN: Coverage: Social Safety Net Programs: 4th Quintile: % of Population data is updated yearly, averaging 26.041 % from Dec 2006 (Median) to 2014, with 4 observations. The data reached an all-time high of 51.492 % in 2010 and a record low of 5.358 % in 2014. Vietnam VN: Coverage: Social Safety Net Programs: 4th Quintile: % of Population data remains active status in CEIC and is reported by World Bank. The data is categorized under Global Database’s Vietnam – Table VN.World Bank.WDI: Social Protection. Coverage of social safety net programs shows the percentage of population participating in cash transfers and last resort programs, noncontributory social pensions, other cash transfers programs (child, family and orphan allowances, birth and death grants, disability benefits, and other allowances), conditional cash transfers, in-kind food transfers (food stamps and vouchers, food rations, supplementary feeding, and emergency food distribution), school feeding, other social assistance programs (housing allowances, scholarships, fee waivers, health subsidies, and other social assistance) and public works programs (cash for work and food for work). Estimates include both direct and indirect beneficiaries.; ; ASPIRE: The Atlas of Social Protection - Indicators of Resilience and Equity, The World Bank. Data are based on national representative household surveys. (datatopics.worldbank.org/aspire/); Simple average;

This dataset presents raw data about the prevalence of different forms of victimisation and of poly-victimisation among high school students in Hanoi, Vietnam. The data was collected using a cross-sectional, anonymous, self-completed survey among ten high schools in urban and rural areas of Hanoi, Vietnam, including public schools, private schools and centres for continuing education. A total of 1,745 students aged 15-18 were invited to particiate, of which 1,616 returned the questionnaire. The Juvenile Victimization Questionnaire Revised 2 (JVQ-R2) was used to assess exposure to poly-victimisation. Demographic information collected consisted of age, gender, residential areas, family components, number of sibling, parents' educational attainment, parents' occupations, socio-economic status, parents' history of alcohol and drug use, academic burdens and satisfaction.

Abstract

The 2005 Vietnam Population and AIDS Indicator Survey (VPAIS) was designed with the objective of obtaining national and sub-national information about program indicators of knowledge, attitudes and sexual behavior related to HIV/AIDS. Data collection took place from 17 September 2005 until mid-December 2005.

The VPAIS was implemented by the General Statistical Office (GSO) in collaboration with the National Institute of Hygiene and Epidemiology (NIHE). ORC Macro provided financial and technical assistance for the survey through the USAID-funded MEASURE DHS program. Financial support was provided by the Government of Vietnam, the United States President’s Emergency Plan for AIDS Relief, the United States Agency for International Development (USAID), and the United States Centers for Disease Control and Prevention/Global AIDS Program (CDC/GAP).

The survey obtained information on sexual behavior, and knowledge, attitudes, and behavior regarding HIV/AIDS. In addition, in Hai Phong province, the survey also collected blood samples from survey respondents in order to estimate the prevalence of HIV. The overall goal of the survey was to provide program managers and policymakers involved in HIV/AIDS programs with strategic information needed to effectively plan, implement and evaluate future interventions.

The information is also intended to assist policymakers and program implementers to monitor and evaluate existing programs and to design new strategies for combating the HIV/AIDS epidemic in Vietnam. The survey data will also be used to calculate indicators developed by the United Nations General Assembly Special Session on HIV/AIDS (UNGASS), UNAIDS, WHO, USAID, the United States President’s Emergency Plan for AIDS Relief, and the HIV/AIDS National Response.

The specific objectives of the 2005 VPAIS were: • to obtain information on sexual behavior. • to obtain accurate information on behavioral indicators related to HIV/AIDS and other sexually transmitted infections. • to obtain accurate information on HIV/AIDS program indicators. • to obtain accurate estimates of the magnitude and variation in HIV prevalence in Hai Phong Province.

Geographic coverage

National coverage

Analysis unit

• Household
• Women age 15-49
• Men age 15-49

Kind of data

Sample survey data [ssd]

Sampling procedure

The sampling frame for the 2005 Vietnam Population and AIDS Indicator Survey (VPAIS) was the master sample used by the General Statistical Office (GSO) for its annual Population Change Survey (PCS 2005). The master sample itself was constructed in 2004 from the 1999 Population and Housing Census. As was true for the VNDHS 1997 and the VNDHS 2002 the VPAIS 2005 is a nationally representative sample of the entire population of Vietnam.

The survey utilized a two-stage sample design. In the first stage, 251 clusters were selected from the master sample. In the second stage, a fixed number of households were systematically selected within each cluster, 22 households in urban areas and 28 in rural areas.

The total sample of 251 clusters is comprised of 97 urban and 154 rural clusters. HIV/AIDS programs have focused efforts in the four provinces of Hai Phong, Ha Noi, Quang Ninh and Ho Chi Minh City; therefore, it was determined that the sample should be selected to allow for representative estimates of these four provinces in addition to the national estimates. The selected clusters were allocated as follows: 35 clusters in Hai Phong province where blood samples were collected to estimate HIV prevalence; 22 clusters in each of the other three targeted provinces of Ha Noi, Quang Ninh and Ho Chi Minh City; and the remaining 150 clusters from the other 60 provinces throughout the country.

Prior to the VPAIS fieldwork, GSO conducted a listing operation in each of the selected clusters. All households residing in the sample points were systematically listed by teams of enumerators, using listing forms specially designed for this activity, and also drew sketch maps of each cluster. A total of 6,446 households were selected. The VPAIS collected data representative of: • the entire country, at the national level • for urban and rural areas • for three regions (North, Central and South), see Appendix for classification of regions. • for four target provinces: Ha Noi, Hai Phong, Quang Ninh and Ho Chi Minh City.

All women and men aged 15-49 years who were either permanent residents of the sampled households or visitors present in the household during the night before the survey were eligible to be interviewed in the survey. All women and men in the sample points of Hai Phong who were interviewed were asked to voluntarily give a blood sample for HIV testing. For youths aged 15-17, blood samples were drawn only after first obtaining consent from their parents or guardians.

(Refer Appendix A of the final survey report for details of sample implementation)

Mode of data collection

Face-to-face [f2f]

Research instrument

Two questionnaires were used in the survey, the Household Questionnaire and the Individual Questionnaire for women and men aged 15-49. The content of these questionnaires was based on the model AIDS Indicator Survey (AIS) questionnaires developed by the MEASURE DHS program implemented by ORC Macro.

In consultation with government agencies and local and international organizations, the GSO and NIHE modified the model questionnaires to reflect issues in HIV/AIDS relevant to Vietnam. These questionnaires were then translated from English into Vietnamese. The questionnaires were further refined after the pretest.

The Household Questionnaire was used to list all the usual members and visitors in the selected households. Some basic information was collected on the characteristics of each person listed, including age, sex, relationship to the head of the household, education, basic material needs, survivorship and residence of biological parents of children under the age of 18 years and birth registration of children under the age of 5 years. The main purpose of the Household Questionnaire was to identify women and men who were eligible for the individual interview. The Household Questionnaire also collected information on characteristics of the household’s dwelling unit, such as the source of drinking water, type of toilet facilities, type of material used in the flooring of the house, and ownership of various durable goods, in order to allow for the calculation of a wealth index. The Household Questionnaire also collected information regarding ownership and use of mosquito nets.

The Individual Questionnaire was used to collect information from all women and men aged 15-49 years.

All questionnaires were administered in a face-to-face interview. Because cultural norms in Vietnam restrict open discussion of sexual behavior, there is concern that this technique may contribute to potential under-reporting of sexual activity, especially outside of marriage.

All aspects of VPAIS data collection were pre-tested in July 2005. In total, 24 interviewers (12 men and 12 women) were involved in this task. They were trained for thirteen days (including three days of fieldwork practice) and then proceeded to conduct the survey in the various urban and rural districts of Ha Noi. In total, 240 individual interviews were completed during the pretest. The lessons learnt from the pretest were used to finalize the survey instruments and logistical arrangements for the survey and blood collection.

Cleaning operations

The data processing of the VPAIS questionnaire began shortly after the fieldwork commenced. The first stage of data editing was done by the field editors, who checked the questionnaires for completeness and consistency. Supervisors also reviewed the questionnaires in the field. The completed questionnaires were then sent periodically to the GSO in Ha Noi by mail for data processing.

The office editing staff first checked that questionnaires of all households and eligible respondents had been received from the field. The data were then entered and edited using CSPro, a software package developed collaboratively between the U.S. Census Bureau, ORC Macro, and SerPRO to process complex surveys. All data were entered twice (100 percent verification). The concurrent processing of the data was a distinct advantage for data quality, as VPAIS staff was able to advise field teams of errors detected during data entry. The data entry and editing phases of the survey were completed by the end of December 2005.

Response rate

A total of 6,446 households were selected in the sample, of which 6,346 (98 percent) were found to be occupied at the time of the fieldwork. Occupied households include dwellings in which the household was present but no competent respondent was home, the household was present but refused the interview, and dwellings that were not found. Of occupied households, 6,337 were interviewed, yielding a household response rate close to 100 percent.

All women and men aged 15-49 years who were either permanent residents of the sampled households or visitors present in the household during the night before the survey were eligible to be interviewed in the survey. Within interviewed households, a total of 7,369 women aged 15-49 were identified as eligible for interview, of whom 7,289 were interviewed, yielding a response rate to the Individual interview of 99 percent among women. The high response rate was also achieved in male interviews. Among the 6,788 men aged 15-49 identified as eligible for interview, 6,707 were successfully interviewed, yielding a response rate of 99 percent.

Sampling error

Vietnam GSO Projection: Population: Variant (Var): Medium: Whole Country data was reported at 108,464.000 Person th in 2049. This records an increase from the previous number of 108,296.000 Person th for 2048. Vietnam GSO Projection: Population: Variant (Var): Medium: Whole Country data is updated yearly, averaging 103,677.000 Person th from Dec 2014 (Median) to 2049, with 36 observations. The data reached an all-time high of 108,464.000 Person th in 2049 and a record low of 90,493.000 Person th in 2014. Vietnam GSO Projection: Population: Variant (Var): Medium: Whole Country data remains active status in CEIC and is reported by General Statistics Office. The data is categorized under Global Database’s Vietnam – Table VN.G002: Population: Projection: General Statistics Office.

VN: Population: as % of Total: Female: Aged 0-14 data was reported at 21.775 % in 2017. This records a decrease from the previous number of 21.810 % for 2016. VN: Population: as % of Total: Female: Aged 0-14 data is updated yearly, averaging 36.664 % from Dec 1960 (Median) to 2017, with 58 observations. The data reached an all-time high of 42.765 % in 1967 and a record low of 21.775 % in 2017. VN: Population: as % of Total: Female: Aged 0-14 data remains active status in CEIC and is reported by World Bank. The data is categorized under Global Database’s Vietnam – Table VN.World Bank.WDI: Population and Urbanization Statistics. Female population between the ages 0 to 14 as a percentage of the total female population. Population is based on the de facto definition of population.; ; World Bank staff estimates based on age/sex distributions of United Nations Population Division's World Population Prospects: 2017 Revision.; Weighted average; Relevance to gender indicator: Knowing how many girls, adolescents and women there are in a population helps a country in determining its provision of services.