Table 1.
Demographic Characteristics, Sexual Orientation, and Pregnancy and Related Behaviors by United States National Survey of Family Growth Survey Cycles 2002–2015, Females 15–19 Years of Age (N = 5481)
| Unweighted na(weighted %) | 2002 (n = 1150), Unweighted na(weighted %) | 2006–2010 (n = 2284), Unweighted na(weighted %) | 2011–2015 (n = 2047), Unweighted na(weighted %) | χ2/F | pb | |
|---|---|---|---|---|---|---|
| Demographic characteristics | ||||||
| Mean age (SE) | 17.08 (0.02) | 17.04 (0.04) | 17.10 (0.04) | 17.08 (0.04) | 0.38 | 0.538 |
| Race and ethnicity | ||||||
| Hispanic (any race) | 1397 (19.53) | 231 (15.46) | 531 (18.17) | 635 (22.78) | 7.93 | 0.019 |
| Black, non-Hispanic | 1122 (15.97) | 242 (15.24) | 456 (16.14) | 424 (16.29) | 0.31 | 0.855 |
| Other race, non-Hispanic | 331 (6.39) | 64 (5.69) | 139 (6.45) | 128 (8.43) | 6.77 | 0.849 |
| White, non-Hispanic | 2631 (58.11) | 613 (63.61) | 1158 (59.25) | 860 (54.14) | 11.86 | 0.003 |
| Sexual identity | ||||||
| Heterosexual | 4776 (90.18) | 952 (91.75) | 2057 (91.47) | 1767 (88.53) | 6.95 | 0.031 |
| Gay/lesbian | 95 (1.53) | 12 (1.05) | 39 (1.53) | 44 (1.79) | 2.14 | 0.343 |
| Bisexual | 439 (8.29) | 65 (7.20) | 160 (7.00) | 214 (9.69) | 5.62 | 0.060 |
| Sexual attraction | ||||||
| Only to males | 4361 (80.56) | 958 (84.03) | 1851 (82.48) | 1552 (77.28) | 18.21 | <0.001 |
| Only to females | 50 (0.83) | 4 (0.29) | 23 (1.05) | 23 (1.02) | 4.75 | 0.093 |
| To both | 978 (17.10) | 169 (14.67) | 377 (15.54) | 432 (19.52) | 10.63 | 0.005 |
| Not sure | 68 (1.51) | 14 (1.01) | 24 (0.93) | 30 (2.18) | 5.18 | 0.075 |
| Sexual experience (Lifetime) | ||||||
| Only males | 2578 (46.85) | 612 (52.59) | 1067 (44.19) | 899 (45.10) | 11.25 | 0.004 |
| Only females | 97 (1.76) | 17 (1.24) | 42 (1.89) | 38 (2.00) | 1.60 | 0.449 |
| Both | 580 (9.70) | 107 (9.34) | 242 (9.74) | 231 (9.90) | 0.19 | 0.909 |
| No sex partners | 2192 (41.67) | 413 (36.84) | 918 (44.18) | 861 (43.01) | 8.20 | 0.017 |
| Pregnancy and related behaviors | ||||||
| Ever been pregnant | 679 (10.36) | 180 (14.38) | 300 (11.24) | 199 (7.25) | 27.38 | <0.001 |
| Ever had intercoursec | 2523 (44.15) | 553 (46.76) | 1068 (43.25) | 902 (43.17) | 2.31 | 0.314 |
| Sexual risk with males (of those who have had intercoursec) | ||||||
| 1 Partner | 896 (42.00) | 204 (42.91) | 357 (38.69) | 335 (43.45) | 3.25 | 0.197 |
| 2 Partners | 412 (16.62) | 85 (15.36) | 181 (17.57) | 146 (16.83) | 0.07 | 0.964 |
| 3 or more partners | 921 (41.39) | 195 (41.74) | 412 (43.74) | 314 (39.71) | 1.64 | 0.440 |
| Past-year transactional sexd | 52 (2.02) | 20 (3.24) | 18 (1.57) | 14 (1.49) | 4.05 | 0.132 |
| Past-year condomless sexc | 1457 (60.98) | 349 (66.17) | 610 (59.29) | 498 (58.83) | 5.03 | 0.081 |
| First intercourse ≤age 14c | 240 (10.13) | 58 (12.05) | 115 (11.12) | 67 (7.11) | 8.00 | 0.018 |
| Past-year substance use | ||||||
| Any drug use | 1427 (25.68) | 330 (29.17) | 590 (24.38) | 507 (24.42) | 6.48 | 0.039 |
| Any alcohol use | 3270 (59.84) | 771 (66.79) | 1403 (59.69) | 1096 (55.79) | 17.50 | <0.001 |
a
Unweighted n may not add up to 100% of the total N due to missing data.
b
Results based on Rao-Scott modified chi-square tests. Bold indicates p < 0.05.
c
“Intercourse” and “sex” defined as penile–vaginal intercourse with male partner(s).
d
Exchanged money or drugs with a male for sex.
SE, standard error.