PMC full text:
Table 2.
Evolution of Demographic and Behavioral Characteristics Throughout First Three Waves of Enrollment in Contraceptive CHOICE Project, n = 2,500
| | Total | Wave 1 1st 500 | Wave 2 2nd 1000 | Wave 3 3rd 1000 | | Wave 1 vs. 2 | Wave 2 vs. 3 | Wave 1 vs. 3 | |
|---|---|---|---|---|---|---|---|---|---|
| n | % | % | % | % | p value | p value | p value | p value | |
| Recruitment clinic | <0.001 | 0.315 | <0.001 | <0.001 | |||||
| University-affilliated | 1845 | 73.8 | 78.6 | 75.1 | 70.1 | ||||
| Abortion | 444 | 17.8 | 17.0 | 19.5 | 16.4 | ||||
| Family planning/community health | 211 | 8.4 | 4.4 | 5.4 | 13.5 | ||||
| Race | <0.001 | <0.001 | 0.928 | <0.001 | |||||
| Black | 1086 | 43.7 | 32.5 | 46.7 | 46.2 | ||||
| White | 1209 | 48.7 | 60.6 | 45.6 | 45.7 | ||||
| Other | 190 | 7.6 | 6.9 | 7.6 | 8.1 | ||||
| Hispanic | 0.360 | 0.461 | 0.408 | 0.167 | |||||
| Yes | 114 | 4.6 | 3.6 | 4.4 | 5.2 | ||||
| Age | 0.742 | 0.608 | 0.620 | 0.663 | |||||
| <18 | 99 | 4.0 | 3.8 | 3.5 | 4.5 | ||||
| 18–20 | 426 | 17.0 | 15.8 | 18.0 | 16.7 | ||||
| 21–25 | 1053 | 42.1 | 44.6 | 41.6 | 41.4 | ||||
| >25 | 922 | 36.9 | 35.8 | 36.9 | 37.4 | ||||
| Trouble paying | 0.025 | 0.949 | 0.014 | 0.040 | |||||
| Yes | 968 | 39.0 | 36.7 | 36.9 | 42.3 | ||||
| Receive public assistance | 0.167 | 0.104 | 0.811 | 0.069 | |||||
| Yes | 719 | 28.9 | 25.5 | 29.5 | 29.9 | ||||
| Trouble paying or receiving assistance | 0.046 | 0.254 | 0.121 | 0.016 | |||||
| Yes | 1281 | 51.7 | 47.8 | 50.9 | 54.4 | ||||
| Lifetime sex partners | 0.233 | 0.079 | 0.583 | 0.268 | |||||
| 0–1 | 364 | 14.6 | 13.8 | 14.0 | 15.5 | ||||
| 2–4 | 671 | 26.8 | 28.6 | 26.1 | 26.7 | ||||
| 5–9 | 849 | 34.0 | 30.0 | 36.3 | 33.6 | ||||
| 10+ | 616 | 24.6 | 27.6 | 23.6 | 24.2 | ||||
| History of abortion | 0.001 | 0.971 | 0.001 | 0.007 | |||||
| Yes | 1128 | 45.1 | 48.0 | 48.1 | 40.7 | ||||
| Any STI diagnosis in lifetimea | 0.144 | 0.733 | 0.104 | 0.097 | |||||
| Yes | 702 | 28.4 | 26.4 | 27.2 | 30.6 | ||||
| Any STI at baselineb | <0.001 | 0.110 | 0.006 | <0.001 | |||||
| Yes | 120 | 4.8 | 2.4 | 4.0 | 6.8 | ||||
| Parity | 0.779 | 0.546 | 0.661 | 0.783 | |||||
| 0 | 1236 | 49.4 | 50.4 | 48.5 | 49.9 | ||||
| 1 | 585 | 23.4 | 24.6 | 23.0 | 23.2 | ||||
| 2 | 429 | 17.2 | 16.0 | 18.5 | 16.4 | ||||
| 3+ | 250 | 10.0 | 9.0 | 10.0 | 10.5 | ||||
| Reached desired parity | 0.899 | 0.707 | 0.927 | 0.652 | |||||
| Yes | 953 | 38.1 | 39.0 | 38.0 | 37.8 | ||||
aChlamydia trachomatis, Neisseria gonorrhoeae, Trichomonas vaginalis, syphilis, herpes, or HIV.
bChlamydia trachomatis, Neisseria gonorhoeae, Trichomonas vaginalis.
