TABLE 4.
SGA | Crude HR | Adjusted HR (95% CI)2 | |
n (%) | — | ||
Nonuser | 489 (4.2) | 1.00 | — |
Multivitamin user (any) | 640 (2.9) | 0.76 | 0.83 (0.73, 0.95) |
Preconception, postconception | |||
−, − | 489 (4.3) | 1.00 | — |
++, ++ | 233 (2.7) | 0.73 | 0.89 (0.75, 1.05) |
+, ++ | 63 (2.8) | 0.72 | 0.81 (0.62, 1.07) |
−, ++ | 105 (2.4) | 0.67 | 0.68 (0.54, 0.85) |
− or +, − or + | 239 (3.6) | 0.86 | 0.87 (0.74, 1.03) |
−, no use; +, 1–3 wk during the 6-wk interval; ++, 4–6 wk during the 6-wk interval.
Cox regression models were adjusted for age, parity, BMI, sociooccupational status, and smoking.