Table 3.
Odds of preterm birth among mothers in NYC Pregnancy Risk Assessment Monitoring System, 2004–2007
| Variable | Model 1 | Model 2 | Model 3 | Model 4 |
|---|---|---|---|---|
| OR (95 % CI) | OR (95 % CI) | OR (95 % CI) | OR (95 % CI) | |
| Race/ethnicity nativity status | ||||
| Non-Latino White (US born) | 1.0 | 1.0 | 1.0 | 1.0 |
| Non-Latino White (foreign born) | 0.51 (0.30, 0.87) | 0.52 (0.31, 0.89) | 0.43 (0.24, 0.77) | 0.47 (0.26, 0.84) |
| Non-Latino Black (US born) | 3.01 (2.08, 4.37) | 2.87 (1.92, 4.30) | 2.39 (1.54, 3.71) | 2.43, 1.56, 3.77) |
| Non-Latino Black (foreign born) | 2.60 (1.75, 3.86) | 2.53 (1.65, 3.87) | 2.43 (1.50, 3.93) | 2.60 (1.60, 4.24) |
| Asian/Pacific Islander (foreign born) | 1.18 (0.74, 1.88) | 1.22 (0.76, 1.97) | 1.16 (0.68, 1.98) | 1.23 (0.71, 2.14) |
| Puerto Rican (Mainland born) | 1.32 (0.81, 2.15) | 1.27 (0.77, 2.09) | 1.10 (0.61, 1.99) | 1.17 (0.66, 2.09) |
| Puerto Rican (Island born) | 2.10 (1.03, 4.29) | 2.09 (1.01, 4.34) | 1.56 (0.67, 3.65) | 1.72 (0.73, 4.06) |
| Other Latino (US born) | 1.72 (1.00, 2.96) | 1.77 (1.01, 3.09) | 1.69 (0.91, 3.13) | 1.84 (0.99, 3.41) |
| Other Latino (foreign born) | 1.30 (0.90, 1.87) | 1.33 (0.87, 2.01) | 1.34 (0.83, 2.16) | 1.53 (0.95, 2.49) |
| Maternal age | ||||
| ≥35 | 1.0 | 1.0 | 1.0 | |
| <35 | 0.77 (0.60, 0.99) | 0.87 (0.64, 1.19) | 0.81 (0.59, 1.11) | |
| Marital status | ||||
| Married/partnered | 1.0 | 1.0 | 1.0 | |
| Single/divorced/widowed | 0.76, 0.58, 0.99) | 0.79 (0.58, 1.09) | 0.77 (0.56, 1.06) | |
| Education | ||||
| >High school | 1.0 | 1.0 | 1.0 | |
| ≤High school | 1.06 (0.84, 1.35) | 0.95 (0.72, 1.24) | 1.00 (0.76, 1.32) | |
| Insurance coverage | ||||
| Other insurance | 1.0 | 1.0 | 1.0 | |
| Medicaid | 0.82 (0.62, 1.10) | 0.80 (0.57, 1.11) | 0.83 (0.59, 1.16) | |
| No insurance | 0.84 (0.62, 1.15) | 0.78 (0.54, 1.12) | 0.84 (0.58, 1.22) | |
| Behavioral risk factors | ||||
| Alcohol use | 1.23 (0.79, 1.91) | 1.23 (0.79, 1.92) | ||
| Tobacco use | 1.35 (0.76, 2.40) | 1.37 (0.76, 2.47) | ||
| Late prenatal care initiation | 1.07 (0.80, 1.44) | 1.06 (0.79, 1.42) | ||
| IPV (during pregnancy) | 1.57 (0.85, 2.88) | 1.75 (0.94, 3.26) | ||
| Medical risk factors | ||||
| Hypertension | 3.16 (2.34, 4.26) | 3.23 (2.39, 4.38) | ||
| Any diabetes | 1.11 (0.77, 1.61) | 1.21 (0.84, 1.75) | ||
| Previous PTB | 3.08 (2.10, 4.50) | 3.21 (2.19, 4.70) | ||
| Weight gain during pregnancy | ||||
| Adequate | 1.0 | 1.0 | ||
| Inadequate | 1.81 (1.34, 2.47) | 1.83 (1.34, 2.49) | ||
| Too much | 0.72 (0.52, 0.99) | 0.71 (0.51, 0.97) | ||
| Missing | 1.11 (0.69, 1.78) | 1.07 (0.66, 1.74) | ||
| Sources of support | ||||
| 4+ | 1.0 | |||
| 2–3 | 0.68 (0.49, 0.93) | |||
| 0–1 | 0.61 (0.43, 0.86) | |||
| Social support | ||||
| High | 1.0 | |||
| Medium | 0.90 (0.65, 1.23) | |||
| Low | 1.06 (0.66, 1.70) | |||
| Adjusted R2 | 0.0172 | 0.0193 | 0.0477 | 0.052 |