Table 2.
Demographic and Behavioral Characteristics of Female Respondents in the Analysis Sample (n=5,972), by Sexual Orientation Identity: The National Longitudinal Study of Adolescent to Adult Health, Wave IV (2008)
| 100% Heterosexual | Mostly Heterosexual | Bisexual | Lesbian a | p-value b | |
|---|---|---|---|---|---|
| % (n)/Mean (SE) | % (n)/Mean (SE) | % (n)/Mean (SE) | % (n)/Mean (SE) | ||
| TOTAL | 78.7 (4,739) | 17.6 (1,013) | 2.53 (145) | 1.2 (75) | -- |
|
| |||||
| Teen Pregnancy c, % | 28.4 (1,355) | 31.4 (336) | 46.6 (58) | 17.8 (17) | .002 |
| Early Pregnancy (age <18) c | 45.6 (595) | 42.9 (147) | 58.0 (26) | 50.7 (11) | 0.456 |
| Late Pregnancy (age 18–19) c | 54.4 (760) | 57.1 (189) | 42.0 (32) | 49.3 (6) | |
| Number of Teen Pregnancies (among those with a teen pregnancy) c | |||||
| 1 | 51.7 (615) | 50.8 (159) | 42.1 (29) | 48.8 (9) | .133 |
| 2 | 35.4 (556) | 36.8 (132) | 27.5 (18) | 50.2 (8) | |
| 3+ | 13.1 (184) | 12.4 (45) | 30.4 (11) | 0 (0) | |
| Race/Ethnicity, % | |||||
| Non-Hispanic White | 66.1 (2,478) | 73.5 (618) | 63.6 (74) | 57.9 (29) | <.001 |
| Hispanic | 10.9 (747) | 9.9 (129) | 12.5 (20) | 14. (12) | |
| Non-Hispanic Black | 18.0 (1,175) | 9.1 (170) | 17.9 (40) | 23.2 (26) | |
| Non-Hispanic Other | 5.1 (339) | 7.5 (96) | 5.9 (11) | 5.8 (8) | |
| Wave IV Age, Mean | 28.7 (0.12) | 28.4 (0.14) | 28.3 (0.18) | 28.5 (0.29) | .002 |
| Adolescent Family Structure, % | |||||
| Two Bio-Parents | 53.2 (2,386) | 49.5 (467) | 43.6 (60) | 35.0 (25) | .022 |
| Other Two Parents | 17.2 (857) | 21.5 (238) | 21.5 (39) | 19.2 (18) | |
| Single Parent | 24.9 (1,241) | 23.3 (252) | 32.0 (41) | 42.3 (30) | |
| Other | 4.6 (255) | 5.7 (56) | 2.9 (5) | 3.5 ł | |
| Parental Educational Attainment, % | |||||
| Less than High School | 12.0 (648) | 8.9 (97) | 18.5 (21) | 13.1 (10) | .008 |
| HS diploma/GED | 31.5 (1,346) | 25.3 (240) | 38.9 (46) | 30.1 (23) | |
| Some College | 29.3 (1,396) | 34.5 (333) | 20.9 (31) | 38.8 (25) | |
| Bachelor’s or higher | 27.2 (1,349) | 31.3 (343) | 21.7 (47) | 18.0 (17) | |
| Adolescent Neighborhood Poverty, % | |||||
| Low | 49.8 (2,467) | 59.2 (619) | 45.6 (72) | 48.5 (36) | <.001 |
| Medium | 25.8 (1,134) | 23.3 (223) | 21.7 (39) | 17.5 (13) | |
| High | 24.4 (1,138) | 17.6 (171) | 32.7 (34) | 34.1 (26) | |
| Adolescent Neighborhood Urbanicity, % | |||||
| Rural | 50.1 (2,213) | 46.7 (460) | 37.6 (58) | 48.4 (30) | .075 |
| Urban | 49.9 (2,526) | 53.3 (553) | 62.4 (87) | 51.6 (45) | |
| Adolescent Parental Relationship Quality, Mean | 17.5 (0.07) | 17.1 (0.14) | 16.3 (0.35) | 16.6 (0.32) | <.001 |
| Childhood Sexual Abuse, % | 5.5 (260) | 10.8 (88) | 12.5 (20) | 9.6 (8) | <.001 |
| Coerced Sexual Encounter d, % | 15.2 (636) | 25.3 (250) | 33.7 (46) | 34.3 (21) | <.001 |
| Physically-Forced Sexual Encounter d, % | 10.4 (456) | 17.2 (171) | 24.8 (37) | 14.0 (14) | <.001 |
| Age of First Vaginal Intercourse, Mean | 15.9 (0.06) | 15.4 (0.09) | 14.9 (0.24) | 15.1 (0.38) | <.001 |
| Effective Contraception Use, % | 70.3 (3,308) | 64.1 (639) | 54.3 (85) | 80.9 (61) | <.001 |
| Pre-18 Male Sexual Partner Count e, Mean | 2.7 (0.10) | 4.83 (0.34) | 7.33 (1.44) | 3.69 (0.78) | <.001 |
| Pre-18 Female Sexual Partner Count e, Mean | 0.02 (0.01) | 0.21 (0.05) | 1.19 (0.58) | 1.03 (0.27) | <.001 |
Note: Percentages and means are weighted to reflect Add Health sample design (Ns are unweighted). Column percentages may not add to 100% owing to rounding and weighting.
Sexual Orientation Identity based on self-report at Wave IV; “100% Homosexual” and “Mostly Homosexual” identity collapsed into single group, labeled “Lesbian”
P-values indicate chi2-test [categorical variables]/F-tests [continuous variables] of significant difference in predictor distribution across sexual orientation
Teen pregnancy defined as pregnancy occurring prior to age 20, as retrospectively reported at the Wave IV interview. Number of teen pregnancies, and timing of teen pregnancy (Early [prior to age 18] and Late [age 18–19]) pregnancy percentages/counts reflect distributions among those who experienced a teen pregnancy (n=1,766).
Coerced (e.g. non-physically) and physically-forced sexual encounters were limited to those that occurred prior to age 20
Continuous number of sexual partners “considering any kind of sex” prior to age 18, as retrospectively reported at the Wave IV interview
Indicates cell size too small to report, owing to Add Health reporting requirements