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April 5, 2011, 12:33 pm

India’s Girl Gap

Girls in IndiaRuth Fremson/The New York Times Girls at a feeding center for the hungry in Delhi.

The 2011 census in India, besides noting the country has passed the 1.2 billion mark, has brought renewed attention to a persistent gender gap. This is not the kind of gender gap that makes headlines in the West — related to jobs, salaries, and the like, but a more profound one. Read a Wall Street Journal  blog post by Diksha Sahni for a solid review.

A combination of rising incomes, cheap technology — in this case ultrasound — and deep-rooted cultural norms strongly favoring boys over girls has produced an increasingly distorted ratio of female to male children. Here’s how the trend in the girls-to-boys ratio (in children 0-6 years old) has gone in recent decades:

945/1,000 in 1991
927/,1000 in 2001
914/1,000 in 2011

The global average for this ratio in children is slightly skewed to boys, as well, but toward the high end of the range above.*

India is hardly alone, of course, with China now facing a bride shortage because its one-child policy evidently amplified couples’ eagerness to have a son through selective abortion. Vietnam is seeing a similar trend.

Is this a good or bad thing? That depends on views on women’s and couples’ rights and views on abortion (keep in mind that selective infanticide, starvation and abuse have been other methods of raising the odds of having sons around).

In a broader sense, a country with a population skewed toward males can experience more health problems, crime and potential for conflict, according to some studies. That’s why India and China have both outlawed selective abortion — without having much impact, so far.

Cheap ultrasound is just the leading edge of a very challenging arena in which technology — genetic testing, for instance — opens the door to all kinds of choices that are bound to create social and legal debates.

The gender gap in India has been explored in The Times and International Herald Tribune at least since 1991. Here are a few relevant articles:

The Daughter Deficit” (2009)

India’s Lost Daughters – Abortion Toll in Millions” (2006)

India Steps Up Effort to Halt Abortions of Female Fetuses” (2003)

Ultrasound Skews India’s Birth Ratio” (1991)

[* United Nations population data sort children in a different way than reported in the census above, so I can't provide a precise comparison.]

Views: 796

Replies to This Discussion

I wonder if polyandry will make a comeback?  We might also find the natural upper limit for homosexual  practice in an "open" society.  


I am not sure if you "fix" the birth  disparaity.  Hopefully, it will only a one or two decade problem.


It is only certain areas of India where this is a major problem - it looks like Delhi? is the major culprit - I bet it is influenced by fundamentalist Hindu's




Child sex ratio in India

Although there are many regions of India where girls are aborted or murdered in favour of boys, the situation is very complex and varies by state.
(Taken from UNDP -

BMJ 2009; 338:b1211 doi: 10.1136/bmj.b1211 (Published 9 April 2009)
Cite this as: BMJ 2009; 338:b1211

China’s excess males, sex selective abortion, and one child policy: analysis of data from 2005 national intercensus survey

Free via Creative Commons: OPEN ACCESS
  1. Wei Xing Zhu, professor1
  2. Li Lu, professor and head of department2,
  3. Therese Hesketh, senior lecturer3

+Author Affiliations

  1. 1College of Law, Political Science and Public Administration, Zhejiang Normal University, Jinhua, Zhejiang 310347, China
  2. 2Institute of Social and Family Medicine, Zhejiang University, Hangzhou 310016, China
  3. 3Centre for International Health and Development, University College London, London WC1N 1EH
  1. Correspondence to: T Hesketh
  • Accepted 27 November 2008


Objectives To elucidate current trends and geographical patterns in the sex ratio at birth and in the population aged under 20 in China and to determine the roles played by sex selective abortion and the one child policy.

Design Analysis of household based cross sectional population survey done in November 2005.

Setting All of China’s 2861 counties.

Population 1% of the total population, selected to be broadly representative of the total.

Main outcome measure Sex ratio defined as males per 100 females.

Results 4 764 512 people under the age of 20 were included. Overall sex ratios were high across all age groups and residency types, but they were highest in the 1-4 years age group, peaking at 126 (95% confidence interval 125 to 126) in rural areas. Six provinces had sex ratios of over 130 in the 1-4 age group. The sex ratio at birth was close to normal for first order births but rose steeply for second order births, especially in rural areas, where it reached 146 (143 to 149). Nine provinces had ratios of over 160 for second order births. The highest sex ratios were seen in provinces that allow rural inhabitants a second child if the first is a girl. Sex selective abortion accounts for almost all the excess males. One particular variant of the one child policy, which allows a second child if the first is a girl, leads to the highest sex ratios.

Conclusions In 2005 males under the age of 20 exceeded females by more than 32 million in China, and more than 1.1 million excess births of boys occurred. China will see very high and steadily worsening sex ratios in the reproductive age group over the next two decades. Enforcing the existing ban on sex selective abortion could lead to normalisation of the ratios.


In the absence of intervention, the sex ratio at birth is consistent across populations at between 103 and 107 boys born for every 100 girls.1 2 Higher early mortality among boys ensures a ratio of close to 100 in the all important reproductive years. However, in many countries, mainly in South and East Asia, the sex ratio deviates from this norm because of the tradition of preference for sons.3 Historically, preference for sons has been manifest postnatally through female infanticide and the neglect and abandonment of girls.4 Where this persists, it mainly consists of failure to access necessary medical care.5 6However, since the early 1980s selection for males prenatally with ultrasonographic sex determination and sex selective abortion has been possible. This technology has become widely available in many countries, leading to high sex ratios from birth.5 The highest sex ratios are seen in countries with a combination of preference for sons, easy access to sex selective technology, and a low fertility rate, as births of girls must be prevented to allow for the desired number of sons within the family size.7 In the era of the one child policy the fact that the problem of excess males in China seems to outstrip that of all other countries is perhaps no surprise.6 8

Some of the evidence for this sex imbalance in China has been challenged, because accurate population based figures have been difficult to obtain.9 10Births classified as “illegal,” violating the one child policy, may be concealed to avoid penalties.11 12 Under-reporting of births of girls may be more common in this context, leading to spuriously high sex ratios at birth.13 14 However, if girls are not reported at birth, they are likely to filter into the statistics later, as registration is necessary for immunisation or to start school.15 Therefore, examining the sex ratio across different age bands provides a more accurate picture.

The objectives of this study were to elucidate current trends and geographical patterns in the sex ratio at birth and in the population under the age of 20 in China and to explore the role played by sex selective abortion and the one child policy in the sex imbalance.


We analysed data from the intercensus survey of 2005, which was carried out on a representative 1% of the total population in November 2005 and is the most recent national population survey. It used the same basic organisation, procedures, and questionnaire as the fifth census of 2000, but the mode of implementation took into account acknowledged deficiencies of the 2000 census, which led to under-numeration of the population by an estimated 1.8%, mostly in the youngest age groups, resulting in possible inaccuracies in the sex ratio.16 Specific measures were therefore incorporated into this survey to solve problems of under-numeration, and quality control methods were used to minimise sampling bias. These are described in detail elsewhere.16 The survey covered all of China’s 2861 counties, using a three stage cluster sampling method at township, village, and enumeration district level, with probability proportionate to estimated size, and is hence broadly representative of the total population. The minimal sampling unit was the enumeration district, which consisted of the village committee in rural areas and the neighbourhood committee in urban areas. The survey was carried out in households by staff specifically trained in census techniques. Only data for the under 20 age group are reported here.

Analysis—The major outcome variable is the sex ratio, defined as males per 100 females. We derived 95% confidence intervals for the sex ratios by using the 95% confidence interval for the proportion of female births (pf) with a variance of pf(1-pf). We calculated the excess of males for all age groups by using an average of the mean sex ratios from 13 countries that have normal secondary sex ratios and little or no sex preference.17 These were 105 for the 1-9 age group and 104 for the 10-19 age group.


The survey counted 4 764 512 people under the age of 20: 1 073 229 (22%) urban residents, 813 386 (17%) town residents, and 2 877 897 (60%) rural inhabitants. In the 12 months before the study 161 109 births were reported: 23% in urban areas, 17% in towns, and 60% in rural areas. First order births accounted for 63% of the total, second order for 32%, third order for 4.3%, and fourth or higher order for 1%.

Under 20 sex ratio

Table 1 shows the sex ratio by age group and type of residency. Sex ratios were consistently higher than normal across residency type and all age groups except for urban 15-19 year olds. Sex ratios peaked in the 1-4 age group; the highest was 126 (95% confidence interval 125 to 126) in rural areas. Table 2shows the sex ratio by age group for all provinces. Only two provinces, Tibet and Xinjiang, had sex ratios within normal limits across the age range. Two provinces, Jiangxi and Henan, had ratios of over 140 in the 1-4 age group; four provinces—Anhui, Guangdong, Hunan, and Hainan—had ratios of over 130; and seven provinces had ratios between 120 and 129. The provinces with the highest sex ratios are clustered together in the central-southern region (fig 1). Notably, sex ratios were high into the teenage groups in Hainan and Guangxi. The excess of males increased from 5.1% (n=142 634) in the cohort born between 1986 and 1995 to 9.4% (n=184 970) in the cohort born between 1996 and 2005 across the whole country. A marked rise occurred in the percentage of excess males between the two cohorts in all provinces except Xinjiang.

Table 1 

Sex ratio (95% confidence interval) by age and residence, under 20 year olds

Table 2

 Sex ratios (95% confidence intervals) by age group and province, and excess males

Fig 1 Sex ratio in 1-4 year age group: all China’s provinces

Sex ratio at birth

The total sex ratio at birth for the 12 months to October 2005 was 120 (119 to 121) for the whole sample (table 3), with a gradient between urban (115, 113 to 117), town (120, 118 to 122), and rural (123, 121 to 124) areas. This equates to 11 320 excess boys born for the year for the whole sample. The total sex ratio at birth was over 130 in three provinces (Shaanxi, Anhui, and Jiangxi) and over 120 in 14 provinces. These overall figures conceal dramatic differences in sex ratio at birth by birth order. The sex ratio at birth for first order births was slightly high in cities and towns but was within normal limits in rural areas. However, the ratio rose very steeply for second and higher order births in cities 138 (132 to 144), towns 137 (131 to 143), and rural areas 146 (143 to 149), although the numbers of second order births in cities were low. These rises were consistent across all provinces, except Tibet, with very high figures for second births in Anhui (190, 176 to 205) and Jiangsu (192, 174 to 212). For third births, the sex ratio rose to over 200 in four provinces, although third births accounted for only 4.3% of the total.

Table 3

 Sex ratios at birth by birth order for November 2004 to October 2005


The findings paint a discouraging picture of very high and increasing sex ratios in the reproductive age group in China for the next two decades. The sex ratio increased steadily from 108 (108 to 109) in the cohort born between 1985 and 1989 to 124 (123 to 124) in the 2000 to 2004 cohort. However, the ratio then declined to 119 (119 to 120) for the 2005 cohort, perhaps indicating the beginning of a reduction in sex ratios for the future. Sex ratios were outside the normal range for almost all age groups in almost all provinces. The sex ratios rose dramatically between first and second order births, with very high sex ratios for the very few higher order births. Tibet and Xinjiang were the notable exceptions. The highest ratios were seen in the centre and south of the country, in the highly populous provinces of Henan, Jiangxi, Anhui, Guangdong, and Hainan. Extrapolating from this 1% sample to the whole country, we estimate that an excess of 1 132 000 boys were born in the 12 months to October 2005 and that an excess of 32 706 400 males under the age of 20 existed in the whole of China at that time, 18 497 000 of them under the age of 10.

This is the most recent nationwide demographic survey in China, a country undergoing rapid socioeconomic change, where timely data are of particular importance. The survey used specific measures to attempt to ensure coverage of the target group, in order to more accurately estimate the sex ratio.16 A very large survey aiming to represent 1% of the total population obviously has some limitations. Complete coverage of households and inhabitants is clearly impossible on such a large scale. Furthermore, extrapolation to the whole population from a 1% sample should be done with caution. The small sample size at provincial level in some age bands and for second and higher order births leads to wide confidence intervals, illustrating the uncertainty around these figures. However, the overall credibility of the data is increased by the high sex ratios in older age groups, for which concealment and under-reporting of girls would be difficult, and by the number of births counted for the 12 months to October 2005 (161 109), which matches the estimate of 16 million births a year from other sources.18 The findings increase our understanding of the roles of sex selective abortion and the influence of the one child policy in the sex imbalance in China and have clear policy implications.

Role of sex selective abortion

The precise role of sex selective abortion in the sex imbalance has been unclear, not least because the practice is illegal in China and obtaining reliable figures is therefore difficult. Some small rural studies have made estimates for proportions of sex selective abortions from hospital based and community birth records.19 20 21 Two concluded that sex selective abortion was the major cause of the sex imbalance; however, local circumstances vary hugely in China, so wider inferences need to be made with caution. The findings of this survey help to elucidate the role of sex selective abortion in the high sex ratio at the national level.

Firstly, if under-registration of girls, rather than sex selective abortion, accounted for most of the excess births of boys, then sex ratios would fall from birth through early childhood, as girls are required to be registered for immunisation and school entry.15 Our finding that the sex ratios for the 1-4 year old cohort are higher than those at birth and in infancy tends to refute this hypothesis, suggesting that the rise in the 1-4 age group is a cohort effect—that is, it reflects the higher sex ratio at birth in this cohort. To further investigate the role of under-registration, comparison can be made between each cohort specific sex ratio and the corresponding sex ratio at birth from previous census data.22 23 This shows that with only one exception, the 15-19 year old cohort born between 1985 and 1989, the sex ratio at birth was higher or very close to the sex ratio of the corresponding birth cohort in the 2005 survey: the age 1-4 cohort had a sex ratio of 124 and a sex ratio at birth of 120, the 5-9 cohort had a sex ratio of 119 and a sex ratio at birth of 118, the corresponding ratios for the 10-14 cohort were 114 and 112, and those for the 15-19 cohort were 108 and 111. This lends support to the assertion that under-registration of girls is not a major contributor to high sex ratios at birth. Infanticide is of course another possible explanation for girls missing at birth, but this is widely acknowledged to be very rare now.24 25 26 27

Secondly, the dramatic increase in sex ratio with second births that our data document, shows that couples are selecting to ensure a boy, the so called “at least one son practice.”15 In urban areas where few couples are allowed a second child, the high sex ratio for first order births (110, 95% confidence interval 107 to 113) suggests some sex selection occurring with the only child. This pattern of dramatic increases in sex ratios for second children is not unique to China. In both South Korea and parts of India, where overall sex ratios are high, the sex ratio increases dramatically for second and higher order births, which has been attributed to sex selective abortion, as couples try to ensure the birth of male offspring while limiting their family size.7 28

Thirdly, the steady rise in sex ratios across the birth cohorts since 1986 mirrors the increasing availability of ultrasonography over that period. The first ultrasound machines were used in the early 1980s; they reached county hospitals by the late 1980s and then rural townships by the mid-1990s.21 29Since then, ultrasonography has been very cheap and available even to the rural poor. Termination of pregnancy is also very available, in line with the one child policy.26 Although sex selective abortion is illegal, proving that an abortion has been carried out on sex selective as opposed to family planning grounds is often difficult when abortion itself is so readily available.21

Role of one child policy

The relation between the sex ratio and the one child policy is a complex one. This study covers births taking place after the policy was instigated, so the increase in sex ratio that we document across age cohorts born in the past 20 years cannot be blamed on the policy in itself. However, the policy is implemented differently across the country (fig 2), and our data do suggest that the sex ratio is related to the way in which the policy is implemented.15 Whereas in most cities only one child is allowed, three main variants of the policy exist in rural areas. Type 1 provinces are most restrictive—around 40% of couples are allowed a second child but generally only if the first is a girl. In type 2 provinces everyone is allowed a second child if the first is a girl or if parents with one child experience “hardship,” the definition of which is open to interpretation by local officials. Type 3 provinces are most permissive, allowing couples a second child and sometimes a third, irrespective of sex. Our data show that the type 2 variant, which allows couples a second child after a girl, results in the highest sex ratios for second order births and the overall highest sex ratios, as seen in Henan, Anhui, Jiangxi, Hunan, Guangdong, and Hainan. These are largely more traditional, predominantly agricultural provinces, where bearing sons is still seen as necessary for long term security.21 29

Fig 2 Variation in implementation of the one child policy15

Medium sex ratios were most common in the strict type 1 provinces. However, these provinces are also wealthier, levels of education are higher, especially among women, traditional values of preference for sons are changing, and more people have pensions making them less dependent on sons to provide security in old age.30 A study in 2001 showed that more than 50% of women of reproductive age in such provinces express no preference for a son.31 The lowest (most normal) ratios are seen in the type 3, most permissive, provinces, such as Tibet, Xinjiang, and Ningxia. However, these provinces are also sparsely populated and poor, inhabited partly by ethnic groups who are generally less inclined to prefer sons and less accepting of abortion.29

This analysis is inevitably simplistic, given intra-provincial diversity, but the findings do point to the tendency for the type 2 variant of the policy to result in high sex ratios. The policy implications are clear: changing the regulations in force in type 2 provinces, which permit most couples a second child after a female birth, could help to reduce the sex ratio. Indeed, some commentators have gone further: now that the fertility rate is below replacement, some have recommended that all couples should be allowed two children irrespective of sex,30 31 32 and relaxation of the policy is expected over the next decade.

Although some imaginative and extreme solutions have been suggested,33 34nothing can be done now to prevent this imminent generation of excess men. The government is very aware of the problem and has openly expressed concerns about the consequences of large numbers of excess men for societal stability and security.22 As early as 2000 the government launched a range of policies to specifically counter the sex imbalance, the “care for girls” campaign. This includes changes in laws in areas such as inheritance by females, as well as an educational campaign to promote gender equality. These measures have had some success, with reports of lower sex ratios at birth in targeted localities.22 This shows that change is occurring. In addition, the finding that the sex ratio at birth did not increase between 2000 and 2005, and that the ratio for the first (and usually only) birth in many urban areas is within normal limits, means that the sex ratio may fall in the foreseeable future.

What is already known on this topic

  • The reported sex ratio (males per 100 females) in China is high, but accurate population based figures for actual sex ratios have been notoriously difficult to obtain

  • The role of sex selective abortion and the influence of the one child policy on the sex imbalance have been unclear

What this study adds

  • China will see very high and steadily worsening sex ratios in the reproductive age group for the next two decades

  • Sex selective abortion accounts for almost all the excess males

  • One particular variant of the one child policy leads to the highest sex ratios


Cite this as: BMJ 2009;338:b1211


It's probably influenced by affluence; richer people can afford pre-natal testing and abortions.  We may not need to blame religion for this, although I suppose the initial preference for boys may come from Hinduism, I would love it for one of the ex-Hindus in our site to confirm this.

It has to do with Religion, Blame religion , religion and only religion. The Dowry system is primarily responsible for this. Next is a woman's right in our country, in which they have been treated, especially in rural India. In Hindu Religion, while getting married there is a ritual of agreeing / making some statements in Sanskrit which claims the that groom takes total rights and can do whatever he wants to his bride by paying 1 pasie/cent during the wedding,the ritual unfortunately is still followed today and is observed by the good, wealthy and the so called 'educated people'. This however must not be confused with the Dowry system. There's plenty of evidence in Hinduism that undermines the position of women in society.

From wiki : -

A dowry (also known as trousseau or tocher or, in Latin, dos) is the money, goods, or estate that a woman brings to her husband in marriage.[1] It contrasts with bride price, which is paid to the bride's parents, and dower, which is property settled on the bride herself by the groom at the time of marriage. The same culture may simultaneously practice both dowry and bride price. Dowry is an ancient custom, and its existence may well predate records of it.


In 1961, the Government of India passed the Dowry Prohibition Act, making the dowry demands in wedding arrangements illegal.[12] However, many cases of dowry-related domestic violence, suicides and murders have still been reported.[13]

In 1985, the Dowry Prohibition (maintenance of lists of presents to the bride and bridegroom) rules were framed. According to these rules, a signed list of presents given at the time of the marriage to the bride and the bridegroom should be maintained. The list should contain a brief description of each present, its approximate value, the name of whoever has given the present and his/her relationship to the person. However, such rules are hardly enforced.[14]

A 1997 report claimed that at least 5,000 women die each year because of dowry deaths, and at least a dozen die each day in 'kitchen fires' thought to be intentional.[15] The term for this is "bride burning" and is criticised within India itself.[13] Amongst the urban educated, such dowry abuse has reduced dramatically.

-------- end of wiki ---------------

A poor Indian family who conforms to the Dowry system wouldn't want to have a daughter who has to get married and has to be paid a lot of money i.e. Dowry to the groom in order to get their daughter married, hence the illegal abortions. Besides the Women here are generally suppressed.

You have to keep two facts in ur head - ^ 1.this is mostly true for rural India, in urban mega cities like Bombay, Calcutta, a women is treated somewhat liberally but the Women who are acknowledging this freedom, and quality of life today are usually from the middle or upper middle class of the urban cities that I made mention of. 2. In the dowry system the groom / groom's family has often demanded such luxury / wealth that the brides family had almost become bankrupt, and this mostly happened and still happens in rural India which constitutes most of the population of India.

Thanks so much for this information, Jay!

wow, amazing....sad, but amazing....probably poor rural people curse god when a female child is born, knowing her dowry might bankrupt them....geez...


Glad to hear women's rights are sneaking into the big cities. 

In Bihar Baby girls are usually drowned by poor families in secrecy and previously they were burnt alive.
That is horrific. Poverty is a terrible thing. Mix it with crazy customs fed by crazy religion, and that's what happens.


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