Table 2.
Among Prenatally Employed Women Who Initiated Breastfeeding, the Association of Baby’s Age When Mothers First Return to Work and Postnatal Work Status with Breastfeeding Duration ≥12 Months, U.S. Department of Agriculture’s WIC Infant and Toddler Feeding Practices Study-2
| Breastfeeding duration ≥12 months |
|||
|---|---|---|---|
| Model 1 | Model 2 | Model 3 | |
|
|
|||
| Adjusteda ORs (95% CIs) | |||
| Postnatal work statusb | |||
| Full time | 0.24 (0.13–0.44) | — | — |
| Part time | 0.51 (0.31–0.83) | — | — |
| Did not return to work | Referent | — | — |
| Baby’s age when women first returned | |||
| ≤1 month | — | 0.33 (0.14–0.82) | — |
| >1 to ≤2 months | — | 0.25 (0.16–0.40) | — |
| >2 to ≤3 months | — | 0.34 (0.22–0.53) | — |
| >3 months | — | 0.54 (0.26–1.12) | — |
| Did not return to work | — | Referent | — |
| Baby’s age when women first returned and postnatal work statusb | |||
| Full time | |||
| Baby is ≤1 month old | — | — | 0.13 (0.04–0.47) |
| Baby is >1 to ≤2 months old | — | — | 0.15 (0.07–0.33) |
| Baby is >2 to ≤3 months old | — | — | 0.28 (0.14–0.58) |
| Baby is >3 months old | — | — | 0.43 (0.18–1.04) |
| Part time | — | — | |
| Baby is ≤1 month old | — | — | 0.52 (0.19–1.42) |
| Baby is >1 to ≤2 months old | — | — | 0.41 (0.24–0.70) |
| Baby is >2 to ≤3 months old | — | — | 0.42 (0.22–0.79) |
| Baby is >3 months old | — | — | 0.62 (0.29–1.33) |
| Did not return to work | Referent | ||
Bold font indicates statistical significance.
Models are adjusted for maternal age at birth, maternal race and ethnicity, maternal education status, breastfeeding history, preterm status, delivery type, number of months worked for pay during pregnancy, mom and dad living in same household, poverty level, consistent WIC participation during the study period, and prior WIC participation.
Reported postnatal work status is the current work status at the time a woman first indicated she was currently working full time or part time and provided baby’s age when she returned. Women were asked current work status at month 3, 7, and 13.
OR, odds ratio; USDA, U.S. Department of Agriculture; WIC, Special Supplemental Nutrition Program for Women, Infants, and Children.