In 2022, the total permanent resident population of Gansu province in China amounted to around 24.92 million inhabitants. Gansu province is located in Western China.

Population: Census: Gansu: Pingliang data was reported at 1,848.607 Person th in 12-01-2020. This records a decrease from the previous number of 2,068.033 Person th for 12-01-2010. Population: Census: Gansu: Pingliang data is updated decadal, averaging 2,067.102 Person th from Dec 2000 (Median) to 12-01-2020, with 3 observations. The data reached an all-time high of 2,068.033 Person th in 12-01-2010 and a record low of 1,848.607 Person th in 12-01-2020. Population: Census: Gansu: Pingliang data remains active status in CEIC and is reported by Pingliang Municipal Bureau of Statistics. The data is categorized under China Premium Database’s Socio-Demographic – Table CN.GE: Population: Prefecture Level City: By Census.

Population: Census: Gansu: Longnan data was reported at 2,407.272 Person th in 12-01-2020. This records a decrease from the previous number of 2,567.718 Person th for 12-01-2010. Population: Census: Gansu: Longnan data is updated decadal, averaging 2,567.718 Person th from Dec 2000 (Median) to 12-01-2020, with 3 observations. The data reached an all-time high of 2,585.479 Person th in 12-01-2000 and a record low of 2,407.272 Person th in 12-01-2020. Population: Census: Gansu: Longnan data remains active status in CEIC and is reported by Longnan Municipal Bureau of Statistics. The data is categorized under China Premium Database’s Socio-Demographic – Table CN.GE: Population: Prefecture Level City: By Census.

This point shapefile represents the locations of townships with 2000 Population Census Data, 9.95% Long Form data, table L7-L8) for the Gansu Sheng province of China for 2000. These data are represented at 1:1,000,000 scale. This layer is part of the China 2000 township population census dataset.

Population: Gansu: Gannan data was reported at 668.722 Person th in 2023. This records a decrease from the previous number of 683.691 Person th for 2022. Population: Gansu: Gannan data is updated yearly, averaging 690.800 Person th from Dec 2005 (Median) to 2023, with 19 observations. The data reached an all-time high of 727.000 Person th in 2009 and a record low of 668.722 Person th in 2023. Population: Gansu: Gannan data remains active status in CEIC and is reported by Gannan Municipal Bureau of Statistics. The data is categorized under China Premium Database’s Socio-Demographic – Table CN.GN: Population: Prefecture Level Region.

Population: Gansu: Lanzhou: Usual Residence data was reported at 4,425.091 Person th in 2023. This records an increase from the previous number of 4,415.277 Person th for 2022. Population: Gansu: Lanzhou: Usual Residence data is updated yearly, averaging 3,942.247 Person th from Dec 2006 (Median) to 2023, with 18 observations. The data reached an all-time high of 4,425.091 Person th in 2023 and a record low of 3,270.100 Person th in 2006. Population: Gansu: Lanzhou: Usual Residence data remains active status in CEIC and is reported by Lanzhou Municipal Bureau of Statistics. The data is categorized under China Premium Database’s Socio-Demographic – Table CN.GE: Population: Prefecture Level City.

Population: Census: Gansu: Dingxi data was reported at 2,524.097 Person th in 12-01-2020. This records a decrease from the previous number of 2,698.622 Person th for 12-01-2010. Population: Census: Gansu: Dingxi data is updated decadal, averaging 2,698.622 Person th from Dec 2000 (Median) to 12-01-2020, with 3 observations. The data reached an all-time high of 2,820.249 Person th in 12-01-2000 and a record low of 2,524.097 Person th in 12-01-2020. Population: Census: Gansu: Dingxi data remains active status in CEIC and is reported by Dingxi Municipal Bureau of Statistics. The data is categorized under China Premium Database’s Socio-Demographic – Table CN.GE: Population: Prefecture Level City: By Census.

Natural growth rate of Gansu sank by 63.12% from 3.85 per thousand population in 2019 to 1.42 per thousand population in 2021. Since the 0.33% increase in 2017, natural growth rate plummeted by 76.41% in 2021. Natural Growth Rate of Population refers to the ratio of natural increase in population (number of births minus number of deaths) in a certain period of time (usually a year) to the average population (or mid-period population) of the same period, expressed in ‰. The following formula is applied: (Number of births - NUmber of deaths)/(Annual average population)*1000‰. Natural Growth Rate of Population = Birth Rate-Death Rate.

Population: Census: Gansu: Tianshui data was reported at 2,984.659 Person th in 12-01-2020. This records a decrease from the previous number of 3,262.548 Person th for 12-01-2010. Population: Census: Gansu: Tianshui data is updated decadal, averaging 3,219.323 Person th from Dec 2000 (Median) to 12-01-2020, with 3 observations. The data reached an all-time high of 3,262.548 Person th in 12-01-2010 and a record low of 2,984.659 Person th in 12-01-2020. Population: Census: Gansu: Tianshui data remains active status in CEIC and is reported by Tianshui Municipal Bureau of Statistics. The data is categorized under China Premium Database’s Socio-Demographic – Table CN.GE: Population: Prefecture Level City: By Census.

1.328 (ten thousand persons) in 2021. Urban population refers to all people residing in cities and towns, while rural population refers to population other than urban population.

Population: Census: Gansu: Jiuquan data was reported at 1,055.706 Person th in 12-01-2020. This records a decrease from the previous number of 1,095.947 Person th for 12-01-2010. Population: Census: Gansu: Jiuquan data is updated decadal, averaging 1,055.706 Person th from Dec 2000 (Median) to 12-01-2020, with 3 observations. The data reached an all-time high of 1,095.947 Person th in 12-01-2010 and a record low of 980.492 Person th in 12-01-2000. Population: Census: Gansu: Jiuquan data remains active status in CEIC and is reported by Jiuquan Municipal Bureau of Statistics. The data is categorized under China Premium Database’s Socio-Demographic – Table CN.GE: Population: Prefecture Level City: By Census.

BackgroundChronic Obstructive Pulmonary Disease (COPD) is a common and harmful disease that requires an effective tool to early screen high-risk individuals. Gansu has unique environments and customs, leading to the different prevalence and etiology of COPD from other regions. The association between altitude and COPD once attracted epidemiologists' attention. However, the prevalence in Gansu and the role of altitude are still unclarified.MethodsIn Gansu, a multistage stratified cluster sampling procedure was utilized to select a representative sample aged 40 years or older. The questionnaire and spirometry examination were implemented to collect participants' information. The diagnosis and assessment of COPD were identified by the Global Initiative for Chronic Obstructive Lung Disease (GOLD) criterion, while post-bronchodilator FEV1/FVC < LLN was for sensitivity analysis. Furthermore, the effect of high altitude on COPD was evaluated by the logistic regression model after propensity score matching (PSM). Finally, the participants were randomly divided into training and validation sets. The training set was used to screen the relative factors and construct a nomogram which was further assessed by the receiver operating characteristic (ROC) curve, calibration curve, and decision curve analysis (DCA) in the two sets.ResultsThere were 2,486 eligible participants in the final analysis, of which 1,584 lived in low altitudes and 902 lived in high altitudes. Based on the GOLD criterion, the crude and standardized prevalences in Gansu were 20.4% (18.7–22.0) and 19.7% (17.9–21.6). After PSM, the logistic regression model indicated that high altitude increased COPD risk [PSM OR: 1.516 (1.162–1.978)]. Altitude, age, sex, history of tuberculosis, coal as fuel, and smoking status were reserved for developing a nomogram that demonstrated excellent discrimination, calibration, and clinical benefit in the two sets.ConclusionsCOPD has become a serious public health problem in Gansu. High altitude is a risk factor for COPD. The nomogram has satisfactory efficiency in screening high-risk individuals.

Population: Gansu: Baiyin: Usual Residence data was reported at 1,488.081 Person th in 2023. This records a decrease from the previous number of 1,502.077 Person th for 2022. Population: Gansu: Baiyin: Usual Residence data is updated yearly, averaging 1,627.093 Person th from Dec 2005 (Median) to 2023, with 19 observations. The data reached an all-time high of 1,757.200 Person th in 2009 and a record low of 1,488.081 Person th in 2023. Population: Gansu: Baiyin: Usual Residence data remains active status in CEIC and is reported by Baiyin Municipal Bureau of Statistics. The data is categorized under China Premium Database’s Socio-Demographic – Table CN.GE: Population: Prefecture Level City.

1,42 (per thousand population) in 2021. Natural Growth Rate of Population refers to the ratio of natural increase in population (number of births minus number of deaths) in a certain period of time (usually a year) to the average population (or mid-period population) of the same period, expressed in ‰. The following formula is applied: (Number of births - NUmber of deaths)/(Annual average population)*1000‰. Natural Growth Rate of Population = Birth Rate-Death Rate.

8,26 (per thousand population) in 2021. Death Rate (or Crude Death Rate) refers to the ratio of the number of deaths to the average population (or mid-period population) during a certain period of time (usually a year), expressed in ‰. Death rate refers to annual death rate. The following formula is used: (Number of deaths)/(Annual average population)*1000‰.

74,06 (years) in 2010. Life Expectancy refers to the average number of years that people who already have lived to a certain age and can relive. It reflects integrated indicators of the level of human health and the level of death and is mainly affected by the level of social and economic conditions and health standards and other factors, and differs a lot in different societies and different period of time. In the case of not specified ages, the average life expectancy refers to life expectancy of the population aged 0.

Population: Gansu: Baiyin: Household Registration data was reported at 1,800.000 Person th in 2022. This records a decrease from the previous number of 1,801.438 Person th for 2021. Population: Gansu: Baiyin: Household Registration data is updated yearly, averaging 1,770.000 Person th from Dec 1996 (Median) to 2022, with 27 observations. The data reached an all-time high of 1,822.819 Person th in 2016 and a record low of 1,640.100 Person th in 1996. Population: Gansu: Baiyin: Household Registration data remains active status in CEIC and is reported by Baiyin Municipal Bureau of Statistics. The data is categorized under China Premium Database’s Socio-Demographic – Table CN.GE: Population: Prefecture Level City.

72,23 (years) in 2010. Life Expectancy refers to the average number of years that people who already have lived to a certain age and can relive. It reflects integrated indicators of the level of human health and the level of death and is mainly affected by the level of social and economic conditions and health standards and other factors, and differs a lot in different societies and different period of time. In the case of not specified ages, the average life expectancy refers to life expectancy of the population aged 0.

47,5 (%) in 2021. Gross Dependency Ratio also called gross dependency coefficient, refers to the ratio of non-working-age population to the working-age population, express in %. Describing in general the number of non-working-age population that every 100 people at working ages will take care of, this indicator reflects the basic relation between population and economic development from the demographic perspective. The gross dependency ratio is calculated with the following formula: (The population of children aged 0-14 + The elderly population aged 65 and over)/(The working-age population aged 15-64)*100%.

Population: Census: Gansu: Lanzhou data was reported at 4,359.446 Person th in 12-01-2020. This records an increase from the previous number of 3,616.163 Person th for 12-01-2010. Population: Census: Gansu: Lanzhou data is updated decadal, averaging 3,616.163 Person th from Dec 2000 (Median) to 12-01-2020, with 3 observations. The data reached an all-time high of 4,359.446 Person th in 12-01-2020 and a record low of 3,142.523 Person th in 12-01-2000. Population: Census: Gansu: Lanzhou data remains active status in CEIC and is reported by Lanzhou Municipal Bureau of Statistics. The data is categorized under China Premium Database’s Socio-Demographic – Table CN.GE: Population: Prefecture Level City: By Census.