Missing Women: Sex Ratio at Birth and India's Daughter Deficit
May 27, 20267 min read
You are in the exam hall. The question reads: "Which of the following factors is the most significant contributor to India's adverse child sex ratio?"
Option A: Low female literacy rates.
Option B: Son preference rooted in patrilineal property inheritance.
Option C: Easy availability of ultrasound technology for sex determination.
Option D: Poverty and dowry burden.
The answer is B. All four contribute, but the root cause is son preference — a cultural preference that predates ultrasound technology, dowry practices, and even modern education. The PC-PNDT Act banned sex determination in 1994. The sex ratio continued to decline until 2011. The most recent NFHS-5 (2019-21) shows improvement — but only in some states. Punjab and Haryana are improving. Uttar Pradesh and Bihar are not. The question is never about whether the problem exists. It is about why the solutions have not worked.
[TOPIC CLASSIFICATION]
Topic type: Social Demography + Gender Studies (with governance and legal dimensions)
PYQ frequency: High (3-4 questions in Prelims, regular Mains GS-1 and GS-2 appearance)
Exam stage: Prelims + Mains GS-1 (population and society) + GS-2 (social justice, government interventions) + Essay
Primary GS paper: GS-1 (Indian Society)
[EXAMINER REASONING]
Primary trap. Candidates confuse "sex ratio" (females per 1000 males) with "child sex ratio" (0-6 years). The overall sex ratio has been improving (from 933 in 2001 to 943 in 2011 to an estimated 1020 in NFHS-5 for the total population due to female longevity). But the child sex ratio (CSR) — which reflects sex selection — has been declining until recently. UPSC uses the CSR trend.
Most confused. The difference between "sex ratio at birth" (SRB, measured from births in the last 5 years) and "child sex ratio" (CSR, Census count of children 0-6). SRB is more responsive to policy changes. CSR reflects cumulative impact. NFHS-5 reports both.
Key anchor. The PC-PNDT (Pre-Conception and Pre-Natal Diagnostic Techniques) Act 1994 — later amended to PC & PNDT Act 2003 — prohibits sex determination and sex-selective abortion. It has been in force for 30 years. Enforcement is weak. Less than 500 convictions across India in three decades. The conviction rate is below 1% of registered cases.
Current affairs hook. The Beti Bachao Beti Padhao (BBBP) scheme launched in 2015 targets the CSR. Data shows improvement in 103 out of 187 initial districts with adverse CSR. But the improvement is in Haryana, Punjab, and Himachal — states with historically low CSR. The scheme's impact in Bihar, UP, Rajasthan is minimal.
Mains hinge. The missing women problem is not uniform across India. The northwest belt (Punjab, Haryana, Delhi, western UP) has the worst CSR. South India (Kerala, Tamil Nadu, Karnataka) has near-normal ratios. The demographic pattern correlates with:
Landholding patterns (Punjab and Haryana have patrilineal land inheritance, dowry systems)
Caste composition (upper caste communities in the Gangetic belt show stronger son preference)
Economic prosperity paradox (wealthier families have worse CSR because they can afford sex determination)
Core Concept
Amartya Sen, in his landmark 1990 paper "More Than 100 Million Women Are Missing," calculated the number of women absent from the world's population by comparing actual sex ratios with the expected biological norm (approximately 952-955 females per 1000 males at birth in populations without sex selection). For India, his estimate was 37 million missing women in 1990 — meaning 37 million more women would be alive if India had a normal sex ratio.
The number has only grown. The 2011 Census recorded 48.5 million missing women. The most recent estimates (2023 Lancet study) place the figure at 46 million — an improvement in the rate but not the stock. India alone accounts for one-third of the world's missing women (global estimate: 140 million).
The mechanism: son preference leads to sex-selective abortion when prenatal sex determination (ultrasound) reveals a female foetus. Where ultrasound is unavailable, the mechanism manifests as differential care — female children receive less nutrition and healthcare than male children, leading to higher female infant and child mortality. The biological female survival advantage (girls are naturally more resilient than boys in infancy) is reversed in India.
The geography of sex selection reveals a striking pattern. The "deficit belt" runs from Punjab and Haryana through Delhi, western UP, and Rajasthan. These are the states with:
Highest agricultural prosperity (Haryana, Punjab)
Strongest patrilineal property norms (land passes through male line)
Most entrenched dowry systems
Highest rates of female foeticide in wealthier, landowning communities
The BIMARU states (Bihar, Madhya Pradesh, Rajasthan, Uttar Pradesh) have a different pattern. They show moderate CSR but high female child mortality from differential care. Sex selection through ultrasound is less prevalent (poorer access), but discrimination after birth is higher.
Kerala and Tamil Nadu buck the trend. They have normal CSR despite being patriarchal societies. The difference: higher female literacy, matrilineal inheritance traditions in some communities (Nair in Kerala), better public health infrastructure, and stronger women's autonomy indicators.
The Beti Bachao Beti Padhao programme, launched in 2015 with 100 crore initial allocation, uses a three-pronged strategy: prevention of sex selection (enforcement of PC-PNDT), protection of the girl child (ensuring survival), and participation (education and skilling). The programme's impact is debated. Haryana's CSR improved from 834 (2011) to 923 (NFHS-5). But critics argue the improvement would have happened anyway due to changing social norms and increased enforcement.
Key Facts
Missing women in India (Lancet 2023): approximately 46 million
Child sex ratio (0-6 years): Census 2001: 927; Census 2011: 918; NFHS-5 (2019-21): 929
Sex ratio at birth (NFHS-5, 2019-21): 930 females per 1000 males (improved from 919 in NFHS-4)
Natural sex ratio at birth (without intervention): 952-955 females per 1000 males
State with worst CSR: Haryana (834 in Census 2011, improved to 923 in NFHS-5)
State with best CSR: Kerala (964 in Census 2011)
PC-PNDT Act: 1994 (amended 2003) — bans sex determination and sex-selective abortion
Convictions under PC-PNDT in 30 years: fewer than 500
BBBP scheme districts: 187 initially (2015), expanded to 640+ (2024)
Lok Sabha discussion on missing women: first time in 2023, led to a standing committee report
Sex ratio at birth for women with 12+ years of education: 958 (better than national average)
Sex ratio at birth for wealthiest quintile: 909 (worse than poorest quintile!)
Previous Year Questions
Year
Stage
What was tested
2024
Prelims
Child sex ratio trends in NFHS-5
2023
Prelims
PC-PNDT Act provisions
2022
Mains GS-1
"Son preference has deep roots in India's social structure." Explain the linkage with patrilineal property rights.
2021
Prelims
Beti Bachao Beti Padhao scheme objectives
2020
Mains GS-1
"Does India's improving sex ratio mask the persistence of son preference?" Analyse with data.
2019
Prelims
Sex ratio at birth vs child sex ratio distinction
2018
Mains GS-2
"The PC-PNDT Act has failed to achieve its stated objectives." Critically examine with recommendations.
2017
Prelims
State-wise child sex ratio ranking
Statement Elimination Guide
"The overall sex ratio in India has been declining continuously since independence." False. The overall sex ratio (females per 1000 males for all ages) has been improving — from 933 in 2001 to 943 in 2011 to an estimated 1020 in recent surveys (due to higher female life expectancy). The child sex ratio (0-6 years) declined until 2011 and is now slowly improving.
"Sex-selective abortion is the sole cause of adverse CSR in India." False. Differential care — female children receiving less nutrition and healthcare — also contributes, especially in poorer states where ultrasound access is limited. Female infant and child mortality is higher than male in India, reversing the biological norm.
"Higher education and income consistently correlate with better sex ratios." False. For income, the relationship is U-shaped. The poorest and the richest both have worse sex ratios — the poorest because of differential care, the richest because they can afford sex determination technology.
"The PC-PNDT Act has been ineffective due to low conviction rates." Correct. Less than 500 convictions in 30 years despite widespread violations. The act is hard to enforce because the procedure (ultrasound) is clinically necessary for legitimate reasons. Doctors rarely inform on each other.
"Beti Bachao Beti Padhao has single-handedly improved the sex ratio." False. The programme has contributed to awareness and enforcement coordination, but the improvement in states like Haryana also reflects broader social change — rising female literacy, declining fertility (which reduces the number of pregnancies and thus the opportunity for sex selection), and generational attitude shifts.
Current Affairs Hook
The 2024 Standing Committee on Health submitted a report on the implementation of the PC-PNDT Act. Key findings: only 12 states have formed the required State Advisory Boards; the National Supervisory Board has not met since 2022; only 35% of registered ultrasound clinics have been inspected in the last three years. The Committee recommended making PC-PNDT data public, introducing a national helpline for anonymous reporting, and linking ultrasound machine registration to the ANMOL platform.
The 2023 Supreme Court judgement in X vs. Union of India addressed the intersection of sex selection and reproductive autonomy. The Court held that while sex-selective abortion is illegal, the state cannot use coercive measures (forced ultrasounds, clinic raids) that violate a woman's right to privacy under Article 21. The judgement narrows the enforcement options for PC-PNDT.
The Unified District Information System for Education (UDISE+) data for 2023-24 shows that the gender gap in school enrollment (primary to higher secondary) has narrowed to 2.1 percentage points — down from 7.4 in 2016-17. Girls' enrollment has increased more than boys' in rural India for the first time. The impact of this on future sex ratios: educated women have fewer children, shorter birth intervals, and higher autonomy — all factors that reduce the opportunity for sex selection.
NFHS-6 (2024-26) data is expected to show continued improvement in CSR. The question for UPSC is whether the improvement is structural (changing social norms) or cyclical (AKC — "achhe din" economic optimism leading to delayed marriages and fewer births, which compresses the sex selection window).
Interlinkages
Sociology: Patrilineal inheritance systems and the culture of son preference. The contrast between matrilineal traditions (Nair in Kerala, Khasi in Meghalaya) and patrilineal systems (northwest India). Dowry as an economic driver of daughter aversion.
Economics: The "marriage squeeze" — when there are more men than women, men in the lowest socioeconomic strata cannot find wives, leading to bride trafficking, forced marriage, and increased sexual violence. The 2021 UNFPA report estimated 12 million forced marriages in India related to sex ratio imbalance.
Law: The PC-PNDT Act structure (prohibition, regulation of ultrasound machines, advisory boards). The Medical Termination of Pregnancy Act 1971 (allows abortion up to 20 weeks, 24 weeks for certain categories). The intersection: sex determination is illegal, but abortion is legal. How do you prove the former without violating the latter?
Health: The secondary sex ratio (at birth) is biologically ~952. But in India, ultrasound has shifted the ratio in favour of males. The health impact: when the sex ratio at birth departs from biology, it signals underlying social discrimination. WHO tracks CSR as an indicator of gender-based violence.
Environment: The son preference in some states (Punjab, Haryana) leads to smaller family size (couples stop having children once they have a son), which paradoxically reduces overall population growth. But the social cost (missing women) outweighs the demographic benefit.
Political Science: The Women's Reservation Act (106th Amendment) is expected to shift policy attention towards women's issues. But the implementation gap (delimitation-pending) means the political representation impact will not be felt until 2029 at the earliest. Meanwhile, women's voter turnout has surpassed men's in 17 states (2024 election data) — a demographic shift that is already changing political incentives.
Common Mistakes
Treating sex ratio improvement as a success story. The CSR has improved from 918 (2011) to 929 (NFHS-5), but this is still below the natural baseline of 952. The stock of missing women (46 million) has not diminished — only the flow has slowed slightly.
Confusing CSR with overall sex ratio. The overall sex ratio has been improving because women live longer. The CSR is the sensitive indicator of sex selection. UPSC asks about the CSR trend, not the overall ratio.
Attributing the problem only to poverty. The richest communities have the worst CSR. Son preference cuts across class lines. The richest simply have better access to sex determination technology.
Assuming the PC-PNDT Act is the primary solution. The act has low conviction rates and is difficult to enforce. The real drivers of improvement are female education, declining fertility, and changing social norms — not police action against clinics.
Ignoring regional variation. India's missing women problem is concentrated in a specific geographic belt. Policy solutions that work in Haryana (PC-PNDT enforcement + community engagement) may not work in Bihar (where differential care, not sex-selective abortion, is the primary mechanism).
Revision Snapshot
Forty-six million women are missing from India's population — the result of son preference driving sex-selective abortion and differential care. India's child sex ratio declined from 927 (2001) to 918 (2011), then improved to 929 (NFHS-5, 2019-21). The PC-PNDT Act (1994) bans sex determination but conviction rates are below 1%. The Beti Bachao Beti Padhao programme (2015) has contributed to improved CSR in Haryana, Punjab, and Himachal. The root cause is patrilineal property inheritance — the northwest belt (Punjab, Haryana, western UP) has the worst ratios. South India (Kerala, Tamil Nadu) has near-normal ratios due to higher female literacy and matrilineal traditions. The richest communities have worse CSR than the poorest because they can afford sex determination technology. The solution lies in female education (which reduces fertility and increases autonomy), economic empowerment, and generational attitude change — not legal enforcement alone.
Source Notes
Census of India: Child Sex Ratio 2001, 2011
NFHS-5 (2019-21): Sex Ratio at Birth fact sheet, Ministry of Health
Lancet 2023: "Missing women in India — trends and projections"
Amartya Sen (1990): "More Than 100 Million Women Are Missing," New York Review of Books
Standing Committee on Health: PC-PNDT Implementation Report 2024
UNFPA: State of World Population 2021 (India supplement)
PRS India: BBBP Scheme Performance Audit 2023
World Bank: "Son Preference and the Missing Women in India" (Policy Research Working Paper 2022)
Ministry of Women and Child Development: BBBP Annual Report 2023-24