Table 2.
Bivariate statistics of the analytic sample for all variables and controls by sexual initiation class
| Vaginal Initiators/ Multiple Behaviors |
Postponers | Early/Atypical Initiators |
Total | F(df) | |
|---|---|---|---|---|---|
| (n = 5,396; 81.6%) | (n = 650; 9.4%) | (n = 541; 9.0%) | (N = 6,587) | ||
| Frequencies, n (%) | |||||
| Biological Sex | F(1.9, 243.9) = 26.1** | ||||
| Male | 2,253 (45.3) | 330 (55.0) | 330 (64.7) | 2,913 (47.9) | |
| Female | 3,143 (54.7) | 320 (45.0) | 211 (35.3) | 3,674 (52.1) | |
| Race† | F(5.7, 724.8) = 12.1** | ||||
| Hispanic | 823 (11.2) | 97 (13.9) | 109 (13.9) | 1,029 (11.7) | |
| NH Black | 1,441 (19.1) | 63 (6.7) | 50 (4.7) | 1,554 (16.7) | |
| NH Other | 354 (5.3) | 107 (10.8) | 55 (6.5) | 516 (5.9) | |
| NH White | 2,778 (64.3) | 383 (68.5) | 327 (74.8) | 3,488 (65.7) | |
| Parent Education (SES)† | F(5.4, 689.6) = 3.3** | ||||
| <HS | 609 (10.4) | 67 (10.5) | 65 (11.1) | 741 (10.5) | |
| HS/GED | 1,375 (27.2) | 121 (20.3) | 157 (32.8) | 1,653 (27.0) | |
| Some College | 1,636 (30.9) | 169 (27.4) | 162 (28.1) | 1,967 (30.3) | |
| College Grad | 1,776 (31.5) | 293 (41.8) | 157 (27.9) | 2,226 (32.2) | |
| Family Structure | F(5.6, 722.5) = 5.6** | ||||
| Two biological parents | 2,912 (56.3) | 473 (73.4) | 306 (61.1) | 3,691 (58.4) | |
| Other two parent family | 1,027 (18.2) | 75 (9.8) | 114 (17.5) | 1,216 (17.4) | |
| Single parent | 1,251 (21.8) | 91 (14.6) | 110 (18.2) | 1,452 (20.8) | |
| Other | 206 (3.6) | 11 (2.2) | 11 (3.2) | 228 (3.5) | |
| Coerced Sex | F(2.0, 255.0) = 11.8** | ||||
| No | 4,707 (87.0) | 615 (95.0) | 456 (82.6) | 5,778 (87.3) | |
| Yes | 689 (13.0) | 35 (5.0) | 85 (17.4) | 809 (12.7) | |
| Forced Sex | F(1.9, 248.9) = 6.2** | ||||
| No | 4,964 (91.9) | 631 (97.4) | 488 (89.5) | 6,083 (92.2) | |
| Yes | 432 (8.1) | 19 (2.6) | 53 (10.5) | 504 (7.8) | |
| Sexual Abuse | F(1.96, 250.54) = 0.64 | ||||
| No | 5,140 (95.4) | 629 (96.8) | 518 (95.3) | 6,287 (95.5) | |
| Yes | 256 (4.6) | 21 (3.2) | 23 (4.7) | 300 (4.5) | |
| Lifetime Number of Sexual Partners | F(3.8, 488.0) = 124.4** | ||||
| 1–3 | 1,092 (19.2) | 446 (69.4) | 88 (14.9) | 1,626 (23.5) | |
| 4–7 | 1,604 (29.7) | 128 (20.8) | 137 (23.4) | 1,869 (28.3) | |
| ≥8 | 2,700 (51.1) | 76 (9.8) | 316 (61.7) | 3,092 (48.2) | |
| Lifetime STI/STD Diagnosis | F(1.9, 245.8) = 31.9** | ||||
| No | 3,934 (74.5) | 598 (93.0) | 418 (78.0) | 4,950 (76.6) | |
| Yes | 1,462 (25.5) | 52 (7.0) | 123 (22.0) | 1,637 (23.4) | |
| Lifetime Unintended Pregnancy | F(2.0, 253.8) = 39.6** | ||||
| No | 3,238 (61.4) | 553 (84.6) | 338 (64.3) | 4,129 (63.8) | |
| Yes | 2,158 (38.6) | 97 (15.4) | 203 (35.7) | 2,458 (36.2) | |
| Relationship Type | F(7.1, 907.7) = 2.8** | ||||
| Married | 2,539 (47.8) | 334 (53.6) | 272 (48.4) | 3,145 (48.4) | |
| Cohabiting | 1,443 (27.1) | 112 (19.6) | 137 (26.6) | 1,692 (26.3) | |
| Pregnancy | 160 (2.3) | 10 (0.3) | 11 (1.3) | 181 (2.1) | |
| Currently dating | 863 (15.6) | 111 (15.6) | 84 (17.4) | 1,058 (15.8) | |
| Recently dating | 391 (7.2) | 83 (10.8) | 37 (6.3) | 511 (7.4) | |
| Relationship Duration | F(5.6, 712.0) = 4.5** | ||||
| 0–15 months | 1,163 (21.6) | 166 (25.1) | 129 (25.6) | 1,458 (22.3) | |
| 15 months-4 years | 1,303 (24.2) | 181 (28.5) | 120 (22.8) | 1,604 (24.5) | |
| 4–8 years | 1,533 (28.8) | 217 (32.4) | 120 (23.0) | 1,870 (28.6) | |
| >8 years | 1,397 (25.4) | 86 (14.0) | 172 (28.6) | 1,655 (24.6) | |
| Current Relationship | F(1.9, 247.8) = 1.1 | ||||
| No | 948 (17.6) | 136 (18.9) | 91 (14.3) | 1175 (17.5) | |
| Yes | 4448 (82.4) | 514 (81.1) | 450 (85.7) | 5412 (82.5) | |
| Means (SE) | |||||
| Age (range, 28–34) | 28.2 (0.12) | 28.5 (0.13) | 28.0 (0.19) | 28.2 (0.12) | F(2, 127) = 8.9** |
| Years sexually active | 13.4 (0.13) | 7.6 (0.24) | 13.9 (0.21) | 12.9 (0.12) | F(2, 127) = 344.0** |
| Religiosity (range, 3–17)† | 11.3 (0.16) | 12.3 (0.27) | 10.7 (0.24) | 11.3 (0.14) | F(2, 127) = 11.8** |
| Grade point average (range, 1–4)† | 2.8 (0.02) | 3.1 (0.04) | 2.8 (0.04) | 2.8 (0.02) | F(2, 127) = 23.5** |
| Perceived parent attitude toward sex (range, 1–5)† | 4.2 (0.03) | 4.5 (0.04) | 4.1 (0.06) | 4.2 (0.03) | F(2, 127) = 25.6** |
| Substance use (range, 0–8)† | 1.7 (0.07) | 0.7 (0.08) | 1.8 (0.14) | 1.6 (0.07) | F(2, 127) = 61.5** |
| Parent relationship quality (range, 4–20)† | 17.7 (0.06) | 18.3 (0.11) | 17.8 (0.14) | 17.8 (0.06) | F(2, 127) = 10.7** |
| Romantic relationship quality (range, 1–5) | 4.2 (0.02) | 4.3 (0.04) | 4.2 (0.05) | 4.2 (0.02) | F(2, 127) = 6.5** |
Notes: Percentages and means are weighted to yield national probability estimates; Percentages may not sum to 100 due to rounding; NH = Non-Hispanic; SES = socioeconomic status; HS = high school; GED = General Educational Development; STI/STD = sexually transmitted infection/disease; F-statistics indicate differences across sexual initiation classes;
*
p<0.05;
**
p<0.01;
†
Measured at Wave I