Table 2 Overall and newborn sex-specific means (+/- SD) of maternal age, pre-pregnancy BMI, and birth outcomes in the Indiana birth cohort
Variables | Overall Mean | Mean for Male | Mean for Female | p-value |
|---|---|---|---|---|
Maternal age (year) | 29.01 ± 4.66 | 29.03 ± 5.03 | 29.0 ± 4.26 | 0.99 |
Gestation age (days) | 273.86 ± 7.15 | 273.71 ± 8.62 | 274.03 ± 5.07 | 0.98 |
Body weight (g) | 3412.45 ± 534.65 | 3483.39 ± 571.97 | 3330.76 ± 483.93 | 0.49 |
Head circumference (cm) | 34.39 ± 1.92 | 34.75 ± 2.15 | 33.99 ± 1.56 | 0.27 |
Pre-pregnancy BMI | 26.95 ± 5.42 | 26.48 ± 5.48 | 27.48 ± 5.39 | 0.74 |