Sex ratio at birth (male births per female births) in Iran was reported at 1.052 in 2023, according to the World Bank collection of development indicators, compiled from officially recognized sources. Iran - Sex ratio at birth (male births per female births) - actual values, historical data, forecasts and projections were sourced from the World Bank on May of 2025.

Iran IR: Sex Ratio at Birth: Male Births per Female Births data was reported at 1.052 Ratio in 2016. This stayed constant from the previous number of 1.052 Ratio for 2015. Iran IR: Sex Ratio at Birth: Male Births per Female Births data is updated yearly, averaging 1.050 Ratio from Dec 1962 (Median) to 2016, with 20 observations. The data reached an all-time high of 1.052 Ratio in 2016 and a record low of 1.040 Ratio in 1997. Iran IR: Sex Ratio at Birth: Male Births per Female Births data remains active status in CEIC and is reported by World Bank. The data is categorized under Global Database’s Iran – Table IR.World Bank: Population and Urbanization Statistics. Sex ratio at birth refers to male births per female births. The data are 5 year averages.; ; United Nations Population Division. World Population Prospects: 2017 Revision.; Weighted average;

Gross enrolment ratio, post-secondary non-tertiary, gender parity index (GPI) in Iran was reported at 1.2642 GPI in 2012, according to the World Bank collection of development indicators, compiled from officially recognized sources. Iran - Gross enrolment ratio, post-secondary non-tertiary, gender parity index - actual values, historical data, forecasts and projections were sourced from the World Bank on June of 2025.

School enrollment, tertiary (gross), gender parity index (GPI) in Iran was reported at 1.0005 % in 2022, according to the World Bank collection of development indicators, compiled from officially recognized sources. Iran - Ratio of female to male tertiary enrollment - actual values, historical data, forecasts and projections were sourced from the World Bank on May of 2025.

Iran IR: Gender Parity Index (GPI): Literacy Rate: Youth Aged 15-24 data was reported at 0.995 Ratio in 2014. This records an increase from the previous number of 0.993 Ratio for 2013. Iran IR: Gender Parity Index (GPI): Literacy Rate: Youth Aged 15-24 data is updated yearly, averaging 0.988 Ratio from Dec 1976 (Median) to 2014, with 10 observations. The data reached an all-time high of 0.995 Ratio in 2014 and a record low of 0.597 Ratio in 1976. Iran IR: Gender Parity Index (GPI): Literacy Rate: Youth Aged 15-24 data remains active status in CEIC and is reported by World Bank. The data is categorized under Global Database’s Iran – Table IR.World Bank.WDI: Education Statistics. Gender parity index for youth literacy rate is the ratio of females to males ages 15-24 who can both read and write with understanding a short simple statement about their everyday life.; ; UNESCO Institute for Statistics; Weighted average; Each economy is classified based on the classification of World Bank Group's fiscal year 2018 (July 1, 2017-June 30, 2018).

Population, female (% of total population) in Iran was reported at 49.16 % in 2023, according to the World Bank collection of development indicators, compiled from officially recognized sources. Iran - Population, female (% of total) - actual values, historical data, forecasts and projections were sourced from the World Bank on June of 2025.

Iran IR: Gender Parity Index (GPI): Secondary School Enrollment: Gross data was reported at 1.002 Ratio in 2015. This records an increase from the previous number of 0.994 Ratio for 2014. Iran IR: Gender Parity Index (GPI): Secondary School Enrollment: Gross data is updated yearly, averaging 0.925 Ratio from Dec 1971 (Median) to 2015, with 33 observations. The data reached an all-time high of 1.011 Ratio in 2007 and a record low of 0.531 Ratio in 1971. Iran IR: Gender Parity Index (GPI): Secondary School Enrollment: Gross data remains active status in CEIC and is reported by World Bank. The data is categorized under Global Database’s Iran – Table IR.World Bank.WDI: Education Statistics. Gender parity index for gross enrollment ratio in secondary education is the ratio of girls to boys enrolled at secondary level in public and private schools.; ; UNESCO Institute for Statistics; Weighted average; Each economy is classified based on the classification of World Bank Group's fiscal year 2018 (July 1, 2017-June 30, 2018).

The length-weight frequency and sex ratio of crayfish (Astacus leptodactylus) in Aras Reservoir, was studied seasonally from spring 2008 to winter 2009. The total mean length and weight for the crayfish were 106.43±7.94mm and 35.81±10.86g, respectively. A measured 18.99% of the caught crayfish exceeded the standard commercial size (120mm) and only 16.43% of the catch weighed higher than the standard commercial weight 50 grams. The standards have been set forth by West Azerbaijan Fishery Office. Generally, the male crayfish dominated the samples. Comparisons of growth equations confirmed that the males are heavier than females with the same size. The results showed that crayfish Astacus leptodactylus has critical condition in Aras Reservoir. Published

School enrollment, primary (gross), gender parity index (GPI) in Iran was reported at 1.0606 % in 2020, according to the World Bank collection of development indicators, compiled from officially recognized sources. Iran - Ratio of female to male primary enrollment - actual values, historical data, forecasts and projections were sourced from the World Bank on June of 2025.

Sex-specific annual incidence and prevalence per 100,000 population and sex risk ratio of MS in Mazandaran, Iran.

Gross enrolment ratio, primary and lower secondary, gender parity index (GPI) in Iran was reported at 1.031 GPI in 2017, according to the World Bank collection of development indicators, compiled from officially recognized sources. Iran - Gross enrolment ratio, primary and lower secondary, gender parity index - actual values, historical data, forecasts and projections were sourced from the World Bank on June of 2025.

Lifetime self-reported abortion in female sex workers with different socio-demographics, sexual behaviour, and injection risk behaviours in Iran (2010).

Ribbonfish, Trichiurus lepturus, is an important component of subsistence fisheries throughout its tropical and subtropical distribution. The data set consist of parameters that used to estimate growth and mortality parameters, sex ratio, morphological relationships and life history traits of Trichiurus lepturus on the northern coasts of the Persian Gulf and Oman Sea.

Demographic and clinical characteristics of the participants by gender, mean ± standard deviation or n (%).

IR：出生时性别比例：新生儿男女比例在12-01-2016达1.052Ratio，相较于12-01-2015的1.052Ratio保持不变。IR：出生时性别比例：新生儿男女比例数据按年更新，12-01-1962至12-01-2016期间平均值为1.050Ratio，共20份观测结果。该数据的历史最高值出现于12-01-2016，达1.052Ratio，而历史最低值则出现于12-01-1997，为1.040Ratio。CEIC提供的IR：出生时性别比例：新生儿男女比例数据处于定期更新的状态，数据来源于World Bank，数据归类于Global Database的伊朗 – 表 IR.世界银行：人口和城市化进程统计。

IR：性别对等指数（GPI）：非文盲率：青年15-24岁在12-01-2014达0.995Ratio，相较于12-01-2013的0.993Ratio有所增长。IR：性别对等指数（GPI）：非文盲率：青年15-24岁数据按年更新，12-01-1976至12-01-2014期间平均值为0.988Ratio，共10份观测结果。该数据的历史最高值出现于12-01-2014，达0.995Ratio，而历史最低值则出现于12-01-1976，为0.597Ratio。CEIC提供的IR：性别对等指数（GPI）：非文盲率：青年15-24岁数据处于定期更新的状态，数据来源于World Bank，数据归类于全球数据库的伊朗 – 表 IR.世行.WDI：教育统计。