Index/Organizations/National Survey of Family Growth

National Survey of Family Growth

Fact-Checks

12 results
Dec 10, 2025
Most Viewed

What age-related trends exist in oral sex practices among adolescents versus adults?

National surveys show oral sex is common across ages but tends to increase with age: most adults (>75–80%) report ever giving or receiving oral sex, while adolescents report lower but still substantia...

Jan 18, 2026
Most Viewed

by age 18, what percentage of men have had oral sex with another male

By age 18 there is no single, nationally reported percentage that cleanly answers “what share of males have performed or received oral sex with another male,” but multiple national surveys give a cons...

Dec 15, 2025
Most Viewed

How do rates of oral sex initiation differ between adolescents and adults by age group?

National surveys and research reviews show oral-sex initiation typically clusters in mid-to-late adolescence (roughly ages 15–18) with prevalence rising sharply into the early 20s and then varying acr...

Dec 21, 2025

What is the correlation between the number of sexual partners an individual has and the likelihood they will get married? Separate by gender

Recent, peer-reviewed analyses report a modest negative correlation between having more non‑marital sex partners and the probability that a person — particularly women in cross‑sectional U.S. surveys ...

Oct 3, 2025

What studies have investigated the link between body count and divorce rates?

Multiple recent analyses converge on a nuanced picture: several studies and reports find , but the relationship varies by dataset, measurement, and interpretation. Major sources include a 2023 Wheatle...

Jan 18, 2026

How have rates of same‑sex sexual experience among US teens changed across NSFG waves from 2002 to 2015?

Across National Survey of Family Growth (NSFG) waves from 2002 through the early‑to‑mid 2010s, the clearest pattern in the published literature is that same‑sex sexual experience rose for women in bro...

Jan 20, 2026

Which nationally representative sexual‑behavior surveys include questions on directionality of anal sex (who is the penetrator)?

Most major U.S. nationally representative sexual‑behavior surveys ask about whether respondents have had anal intercourse, but explicit questions that distinguish directionality — who was insertive ve...

Jan 10, 2026

What recent studies link number of premarital sexual partners to divorce risk in the United States (2010-2024)?

Recent academic work finds a consistent statistical link in U.S. data between the number of premarital sexual partners and higher subsequent divorce risk, with the most rigorous 2024 analysis identify...

Jan 7, 2026

What percentage of women report usually swallowing versus spitting in sexual encounters according to national surveys?

National, probability-based surveys that ask about oral sex (e.g., NHANES and NSFG) document how common oral sex is but do not ask a standard, nationally representative question about whether women “u...

Jan 1, 2026

How do rates of oral sexual behaviors (including swallowing) differ across countries and age cohorts in representative surveys?

Representative surveys show that oral sex (typically measured as ever giving or receiving fellatio or cunnilingus) is common in high‑income countries—with lifetime prevalence often above 75–80% in adu...

Jan 1, 2026

How often do heterosexual women report enjoying performing oral sex in representative population studies?

Representative population surveys show that performing oral sex is very common among heterosexual women—most large U.S. probability studies find lifetime rates above three‑quarters—yet nationally repr...

Jan 1, 2026

What percentage of women have given oral sex to their male partners in the last year?

Available surveys show that most U.S. women report ever having performed oral sex, but the sources provided do not supply a single, recent national percentage for women who gave oral sex to male partn...