| | | Odds ratio of LGA | | (95% CI) | | | Univariable | Final model |
| | Prepregnancy BMI | | | | <18.5 | 0.59 (0.33, 1.07) | 0.58 (0.32, 0.94) | | 18.5–24.9 (ref) | — | — | | 25.0–30.0 | 1.37 (1.03, 1.81) | 1.34 (1.00, 1.79) | | 30.0+ | 1.44 (1.05, 1.98) | 1.53 (1.11, 2.12) |
| | Age (per 1 year) | 1.01 (0.99, 1.04) | — |
| | Preexisting CVD or hypertension | | | | Yes | 1.01 (0.99, 1.04) | — | | No (ref) | — | |
| | Prepregnancy smoking | | | | Yes | 0.98 (0.84, 1.14) | — | | No (ref) | — | |
| | Parity | | | | 0 (ref) | — | — | | 1+ | 1.11 (0.97, 1.26) | |
| | Height (for each 10 cm change) | 1.86 (1.54, 2.25) | 1.98 (1.62, 2.42) |
| | Education | | | | Did not complete high school | 0.91 (0.59, 1.38) | — | | Completed high school only | 0.98 (0.70, 1.35) | | | Education beyond high school (ref) | — | |
| | Income | | | | <$30,000 | 0.83 (0.62, 1.12) | | | $30,000–$80,000 (ref) | — | — | | $80,000+ | 0.96 (0.78, 1.19) | |
| | Stress | 1.03 (0.91, 1.16) | — |
| | Antidepressant use | | | | Yes | 1.85 (1.32, 2.60) | 1.71 (1.20, 2.44) | | No (ref) | — | — |
| | Depression | | | | <16 on CES-D (ref) | — | — | | ≥16 on CES-D | 0.97 (0.82, 1.14) | |
| | Smoking during pregnancy | | | | Yes | 0.83 (0.65, 1.06) | — | | No (ref) | — | |
| | Hyper emesis | | | | Yes | 0.87 (0.73, 1.03) | — | | No (ref) | — | |
| | Exercise | | | | ≥3 times a week (ref) | — | — | | <3 times a week | 1.02 (0.89, 1.16) | |
| | Total kilocalories (per 100 kcal) | 1.01 (0.99, 1.02) | — |
| | Percent kcals from fat (per 10%) | 1.20 (0.89, 1.60) | — |
| | Vitamin D sufficiency | | | | Yes (ref) | — | — | | No | 0.95 (0.81, 1.13) | |
| | Grams of omega-3 (per 1 gram) | 0.89 (0.50, 1.61) | — |
| | Weight gain | | | | Insufficient | 0.57 (0.32, 1.00) | 0.52 (0.29, 0.94) | | Appropriate (ref) | — | — | | Excess | 1.77 (1.25, 2.49) | 1.79 (1.25, 2.57) |
| | Gestational diabetes | | | | None (ref) | — | — | | Abnormal glucose tolerance | 2.28 (1.29, 4.02) | 2.84 (1.53, 5.27) | | Gestational diabetes | 0.80 (0.49, 1.30) | 0.65 (0.38, 1.12) |
| | Insulin use | | | | Yes | 1.38 (0.93, 2.06) | — | | No (ref) | — | |
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*Age, preexisting CVD or hypertension, prepregnancy smoking, parity, education, income, stress, depression, smoking during pregnancy, hyper emesis, exercise, total kilocalories, percent kilocalories from fat, vitamin D sufficiency, omega-3 fatty acid consumption, and insulin use did not reach statistical significance during the model building process.
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