Table 3.
Adjusted regression coefficients and standard errors for the association between total maternal physical activity and birthweight within strata of maternal race, infant sex and maternal body size: Newborn Epigenetic Study
| Total non-sedentary time | |||||
|---|---|---|---|---|---|
| |
Quartile 1 |
Quartile 2 |
Quartile 3 |
Quartile 4 |
|
| β coefficient, Standard Error, p-value | |||||
| Maternal race a | p trend | ||||
| Blacks (N = 510) | Reference | −62.75, 58.50, 0.28 | −46.72, 63.50, 0.46 | −79.58, 66.79, 0.23 | 0.4098 |
| Whites (N = 364) | Reference | −86.40, 83.65, 0.30 | −76.66, 77.40, 0.32 | −106.58, 76.17, 0.16 | 0.3781 |
| Hispanics (N = 270) | Reference | 45.05, 80.29, 0.58 | −41.95, 80.01, 0.60 | −59.13, 79.13, 0.46 | 0.5505 |
| Infant sex b | |||||
| Male Infants (N = 602) | Reference | −53.18, 57.74, 0.36 | −96.60, 56.98, 0.09 | −125.40, 58.10, 0.03 | 0.4737 |
| Female Infants (N = 542) | Reference | −21.26, 57.70, 0.71 | −6.13, 60.31, 0.92 | −31.28, 60.20, 0.60 | 0.8334 |
| Maternal body mass index b | |||||
| 18.5–24.99 kg/m2 (N = 415) | Reference | −75.23, 69.05, 0.28 | −105.91, 67.43, 0.12 | −112.55, 68.71, 0.10 | 0.3124 |
| 25–29.99 kg/m2 (N = 301) | Reference | −62.67, 75.85, 0.41 | −104.62, 80.52, 0.19 | −25.47, 85.03, 0.76 | 0.2735 |
| ≥30 kg/m2 \(N = 374) | Reference | −31.06, 73.90, 0.67 | 74.11, 75.86, 0.33 | −58.55, 75.24, 0.44 | 0.8663 |
a
Adjusted for birth.
b
Adjusted for maternal race/ethnicity and preterm birth.