Table 1.
Characteristics of postpartum subjects
| Demographics and anthropometrics | Lactating (n = 12) | Formula (n = 6) | P value |
|---|---|---|---|
| Age (years) | 34 ± 3 | 33 ± 3 | 0.54 |
| Parity | 3.1 ± 0.8 | 2.5 ± 1.4 | 0.37 |
| Maternal weight (kg) | |||
| Before pregnancy | 74 ± 15 | 71 ± 10 | 0.68 |
| Term | 84 ± 15 | 82 ± 10 | 0.76 |
| At 6 weeks postpartum | 75 ± 16 | 72 ± 8 | 0.52 |
| Retention at 6 weeks postpartum | 1.5 ± 4.0 | 0.4 ± 2.2 | 0.45 |
| BMI at 6 weeks postpartum (kg/m2) | 30.0 ± 5.0 | 30.7 ± 2.0 | 0.70 |
| WHR at 6 weeks postpartum | 0.95 ± 0.04 | 0.97 ± 0.06 | 0.38 |
| Intrahepatic lipid (%) | 8.7 ± 4.6 | 10.4 ± 6.5 | 0.59 |
| DEXA at 6 weeks postpartum (kg) | |||
| Body fat | 31.3 ± 10.4 | 29.9 ± 4.9 | 0.70 |
| FFM | 41.9 ± 5.7 | 39.9 ± 3.9 | 0.39 |
| Infant birth weight (kg) | 3.54 ± 0.40 | 3.44 ± 0.55 | 0.73 |
| Exclusive lactation (%) | 83 | 0 | <0.0001 |
| Amount of formula fed (oz) | 1.4 ± 2.7 | 24.0 ± 0.0 | <0.0001 |
| Gestational age at delivery (days) | 276 ± 6 | 279 ± 9 | 0.60 |
| History of GDM | |||
| All pregnancies except for last (%) | 0 | 0 | |
| Most recent pregnancy (%) | 75 | 50 | 0.36 |
| Family history of type 2 diabetes (%) | 67 | 67 | 1.00 |
Data are mean ± SD unless otherwise indicated. DEXA, dual-energy X-ray absorptiometry; WHR, waist-to-hip ratio.