Table 3.
Characteristic’s associated with preterm (<37 weeks’ gestation) birth
| Characteristic | na (%) | p-Value | |
|---|---|---|---|
| Term | Preterm | ||
| Marijuana use | 0.85 | ||
| No | 149 (67%) | 80 (66%) | |
| Yes | 73 (33%) | 41 (34%) | |
| Marital status | 0.49 | ||
| Currently married | 43 (22%) | 19 (18%) | |
| Never married | 110 (55%) | 60 (55%) | |
| Other | 46 (23%) | 29 (27%) | |
| Race | 0.95 | ||
| African-American | 144 (65%) | 79 (65%) | |
| Non-African-American | 78 (35%) | 42 (35%) | |
| Smoked tobacco during pregnancy | 0.75 | ||
| No | 130 (59%) | 69 (57%) | |
| Yes | 91 (41%) | 52 (43%) | |
| Completed education | 0.20 | ||
| Less than high school | 53 (26%) | 20 (18%) | |
| High school | 64 (32%) | 47 (42%) | |
| Some college | 68 (33%) | 34 (31%) | |
| College | 18 (9%) | 10 (9%) | |
| Homeless within the past year | 0.86 | ||
| No | 177 (89%) | 95 (90%) | |
| Yes | 22 (11%) | 11 (10%) | |
| Physical abuse within the past year | 0.98 | ||
| No | 183 (92%) | 102 (92%) | |
| Yes | 16 (9%) | 9 (8%) | |
| Planned pregnancy | 0.48 | ||
| No | 152 (78%) | 80 (74%) | |
| Yes | 44 (22%) | 28 (26%) | |
| Alcohol use during pregnancy | 0.68 | ||
| No | 174 (80%) | 98 (82%) | |
| Yes | 44 (20%) | 22 (18%) | |
| Any opiate exposure | 0.64 | ||
| No | 205 (92%) | 110 (91%) | |
| Yes | 17 (8%) | 11 (9%) | |
| Any cocaine exposure | 0.70 | ||
| No | 201 (91%) | 108 (89%) | |
| Yes | 21 (9%) | 13 (11%) | |
| Parity | 0.67 | ||
| 0 | 24 (11%) | 15 (12%) | |
| 1+ | 195 (89%) | 105 (88%) | |
| Number of urine samples collected | 0.001 | ||
| 1 | 54 (25%) | 46 (38%) | |
| 2 | 95 (44%) | 54 (45%) | |
| 3+ | 67 (31%) | 20 (17%) | |
| Mean (SD) gestation at entry (wk/d) | 151/7 (42) | 171/7 (58) | 0.003 |
| Mean (SD) height (cm) | 163.0 (7.7) | 163.2 (7.7) | 0.87 |
| Mean (SD) prepregnant weight (kg) | 78.6 (23.4) | 75.7 (21.8) | 0.28 |
| Mean (SD) age (y) | 26.2 (5.3) | 26.2 (5.2) | 0.96 |
| Mean total score (SD), CES-D | 14.4 (11.1) | 15.0 (9.7) | 0.85b |
| Mean total score (SD), PSS | 15.2 (7.7) | 16.1 (7.6) | 0.63b |
| Mean total score (SD), STAI | 36.7 (10.9) | 38.0 (9.7) | 0.77b |
| Mean total score (SD), EDS | 16.1 (9.4) | 14.4 (7.4) | 0.01b |
| Mean total score (SD), PSQI | 7.4 (4.0) | 8.1 (3.9) | 0.20b |
Abbreviations: CES-D, Center for Epidemiologic Studies-Depression Scale; EDS, Everyday Discrimination Scale; PSQI, Pittsburgh Sleep Quality Inventory; PSS, Perceived Stress Scale; SD, standard deviation; STAI, Spielberger State Trait Inventory (only trait was asked).
a
Numbers in the table are unimputed.
b
p-value from simple logistic regression under generalized estimating equations to account for multiple assessments during the same pregnancy.