Sociodemographic and reproductive characteristics among ADAPT study participants experiencing incident pregnancies and non-pregnant participants* at observation prior to entry into the pregnant and non-pregnant matched comparison cohort (n=671)
| Participants experiencing incident pregnancy (n=335) | Non-pregnant comparison participants (n=336) | ||
| n (%)† | n (%)† | P value‡ | |
| Matching variables | |||
| DAP scale score, mean (SD) | 1.7 (1.1) | 1.8 (1.1) | 0.11 |
| Time at risk of pregnancy, mean (SD) years | 0.4 (0.3) | 0.5 (0.4) | <0.001 |
| Characteristics | |||
| Age, mean (SD) years | 25.9 (4.4) | 26.2 (4.9) | 0.35 |
| Self-identified Race and Ethnicity§ | 0.13 | ||
| Black | 31 (9) | 22 (7) | |
| Hispanic/Latine | 198 (59) | 220 (66) | |
| White | 59 (18) | 58 (17) | |
| Multiracial or another race | 47 (14) | 35 (11) | |
| Partnership and cohabitation status | <0.01 | ||
| Has a main partner, living together | 202 (60) | 182 (54) | |
| Has a main partner, not living together | 97 (29) | 88 (26) | |
| Has no main partner | 36 (11) | 66 (20) | |
| Parity§ | 0.14 | ||
| 0—nulliparous | 152 (45) | 177 (53) | |
| 1—primiparous | 95 (28) | 83 (25) | |
| 2—multiparous | 49 (15) | 42 (15) | |
| 3 or more—multiparous | 39 (12) | 33 (12) | |
| Household income level§ | 0.18 | ||
| Above or equal to 100% federal poverty line | 174 (52) | 159 (47) | |
| Below 100% federal poverty line | 110 (33) | 125 (37) | |
| Missing | 51 (15) | 52 (15) | |
| Food insecure in last month | 118 (42) | 100 (35) | 0.11 |
| Importance of religion§ | 0.43 | ||
| Very important | 77 (23) | 85 (26) | |
| Somewhat important | 89 (27) | 93 (28) | |
| Not important | 19 (5) | 25 (8) | |
| No religion | 145 (44) | 130 (39) | |
| State of recruitment | 0.43 | ||
| Arizona | 77 (23) | 79 (24) | |
| California | 103 (31) | 101 (30) | |
| Nevada | 51 (15) | 45 (13) | |
| New Mexico | 16 (5) | 14 (4) | |
| Texas | 88 (26) | 97 (29) |
*Non-pregnant comparison participants were selected among non-pregnant participants from the UC, frequently matched to participants experiencing incident pregnancy based on DAP scale score and time at risk of pregnancy (ie, time in the UC).
†Percentages may not add to 100% due to rounding.
‡P values derived from a series of bivariable mixed effects regression models.
§Characteristic assessed at UC baseline.
ADAPT, Attitudes and Decisions After Pregnancy Testing; DAP, Desire to Avoid Pregnancy; UC, underlying cohort.