Table 4 Linear regression models evaluating associations between between breastfeeding and long term body mass index (BMI) at 4–10 years postpartum, stratified by SES
From: Breastfeeding, socioeconomic status, and long-term postpartum weight retention
| Â | Body Mass Index at 4 to 10Â years postpartum, kg/m2 | |||||
|---|---|---|---|---|---|---|
| Â | Unadjusted | Adjusted | ||||
|  | All β (95% CI) | Low SES β (95% CI) | High SES β (95% CI) | All β (95% CI) | Low SES β (95% CI) | High SES β (95% CI) |
Model Set 1: Breastfeeding | ||||||
  Ever Breastfed | -2.05 (-2.87,-1.24) | -0.71 (-1.71, 0.29) | -2.27 (-3.54, -1.01) | -0.33 (-0.79, 0.12) | -0.29 (-0.86, 0.28) | 0.03 (-0.65, 0.71) |
  Breastfeeding Duration, months | -0.07 (-0.11, -0.04) | -0.03 (-0.08, 0.02) | -0.06 (-0.10, -0.02) | -0.01 (-0.03, 0.01) | -0.01 (-0.04, 0.02) | -0.02 (-0.03, 0.002) |
  Breastfed at least 6 months | -1.92 (-2.51, -1.32) | -0.86 (-1.69, -0.03) | -1.70 (-2.43, -0.98) | -0.41 (-0.74, -0.08) | -0.34 (-0.84, 0.15) | -0.33 (-0.68, 0.03) |
Model Set 2: Breastfeeding + Pre-pregnancy BMI | ||||||
  Ever Breastfed | -0.64 (-1.15, -0.14) | -0.27 (-0.92, 0.38) | -0.01 (-0.72, 0.70) | -0.31 (-0.76, 0.15) | -0.25 (-0.83, 0.32) | 0.04 (-0.64, 0.72) |
  Breastfeeding Duration, months | -0.03 (-0.05, -0.01) | -0.01 (-0.04, 0.02) | -0.02 (-0.04, -0.01) | -0.01 (-0.03, 0.01) | -0.004 (-0.03,0.03) | -0.02 (-0.04,0.002) |
  Breastfed at least 6 months | -0.84 (-1.21, -0.47) | -0.50 (-1.04, 0.03) | -0.46 (-0.84, -0.9) | -0.4 (-0.72, -0.08) | -0.33 (-0.82, 0.15) | -0.33 (-0.68, 0.03) |
Model Set 3: Breastfeeding + Pre-pregnancy BMI + GWG (z-score) | ||||||
  Ever Breastfed | -0.65 (-1.15,-0.16) | -0.24 (-0.87, 0.38) | -0.03 (-0.74, 0.69) | -0.3 (-0.76, 0.16) | -0.25 (-0.82, 0.32) | 0.05 (-0.63, 0.73) |
  Breastfeeding Duration, months | -0.03 (-0.05,-0.01) | -0.01 (-0.04, 0.02) | -0.02 (-0.04, -0.004) | -0.01 (-0.03, 0.01) | -0.003 (-0.03,0.03) | -0.02 (-0.04,0.002) |
  Breastfed at least 6 months | -0.84 (-1.20, -0.47) | -0.52 (-1.04, -0.01) | -0.43 (-0.81, -0.05) | -0.40 (-0.72, -0.08) | -0.33 (-0.81, 0.16) | -0.32 (-0.68, 0.03) |