Table 3.
Correlates of weight change between deliveries
| Variable | Lost more than 2 kg/m2 (N=926) | Lost 2 kg/m2 to gained < 2 kg/m2 (N=8,025) | Gained 2 kg/m2 to < 4 kg/m2 (N=1,008) | Gained 4 kg/m2 or more (N=437) | P valuea |
|---|---|---|---|---|---|
| BMI: | |||||
| index delivery | 32.3 ± 5.5b | 28.6 ± 4.3 | 29.7 ± 4.8 | 30.2 ± 6.1 | < 0.001 |
| subsequent delivery | 28.4 ± 4.8 | 28.7 ± 4.4 | 32.5 ± 4.8 | 36.9 ± 6.3 | < 0.001 |
| Race/ethnicity: | < 0.001 | ||||
| white non – Hispanic | 71.2 | 73.1 | 54.1 | 41.6 | |
| black non – Hispanic | 6.3 | 4.8 | 10.8 | 16.9 | |
| Hispanic | 1.0 | 1.4 | 3.0 | 3.2 | |
| Asian | 5.6 | 6.5 | 6.2 | 2.8 | |
| other race | 16.0 | 14.2 | 26.0 | 35.5 | |
| Maternal age at delivery (years)c | 33.1 ± 4.4 | 33.7 ± 4.2 | 32.4 ± 5.2 | 31.3 ± 5.3 | < 0.001 |
| Parity:c | < 0.001 | ||||
| one | 86.7 | 87.2 | 78.8 | 74.6 | |
| two | 9.8 | 9.4 | 14.6 | 15.6 | |
| three or more | 3.5 | 3.4 | 6.7 | 9.8 | |
| Time between deliveries (years) | 2.4 ± 1.0 | 2.4 ± 1.0 | 2.9 ± 1.3 | 3.2 ± 1.6 | < 0.001 |
| Operative vaginal deliveryd | 13.2 | 14.3 | 12.4 | 8.2 | 0.002 |
| Diabetesc | 4.0 | 2.6 | 3.7 | 3.0 | 0.03 |
a
P values are from a chi square test for categorical variables, one way ANOVA for continuous variables.
b
Dichotomous variables are presented as percent of corresponding column, and continuous variables are presented as mean ± standard deviation.
c
Measured at the time of subsequent delivery.
d
Measured at the time of index delivery.