Table 1:
Demographics of subjects intending exclusive breastfeeding
| Total n=140 | Normal weight n=64 | Overweight n=50 | Obese n=26 | p-value | |
|---|---|---|---|---|---|
| Maternal age a (years) | 33.0 (5.5) | 32.8 (4.6) | 34.5 (4.8) | 30.4 (7.8) | 0.008 |
| Race/ethnicityb (%) | |||||
| White | 84.29 | 87.5 | 80.0 | 84.6 | 0.55 |
| Black | 2.86 | 0 | 6.0 | 3.85 | 0.15 |
| Hispanic | 9.4 | 9.52 | 10.20 | 7.69 | 0.88 |
| Asian | 6.43 | 6.25 | 10.0 | 0 | 0.24 |
| American Indian | 5.71 | 3.13 | 6.00 | 11.54 | 0.30 |
| Pacific Islander | 1.43 | 3.13 | 0 | 0 | 0.30 |
| Declined/Unknown | 2.86 | 1.56 | 6.0 | 0 | 0.23 |
| Nulliparous (%) | 57.1 | 59.4 | 48.0 | 69.2 | 0.18 |
| Prenatal smoking (%) | 0.71 | 0 | 0 | 3.85 | 0.04 |
| GWG a (lbs.) | 13.1 (6.1) | 14.5 (4.2) | 13.1 (6.4) | 9.5 (8.1) | 0.002 |
| Lactation class (%) | 26.5 | 26.2 | 21.7 | 36.0 | 0.43 |
| BF experience (%) (multiparous only) | 96.4 | 92.0 | 100 | 100 | 0.28 |
| Intended BF duration | 0.058 | ||||
| <6 months | 2.24 | 0 | 6.38 | 0 | |
| ≥6 months | 97.76 | 100 | 93.6 | 100 | |
| Intended BF duration a (months) | 14.1 (6.7) | 15.2 (4.9) | 13.8 (9.2) | 11.8 (4.4) | 0.11 |
| GA at delivery a (weeks) | 39.4 (1.3) | 39.5 (1.4) | 39.2 (1.3) | 39.8 (1.1) | 0.15 |
| Mode of delivery (%) | 0.28 | ||||
| Vaginal | 75.7 | 75.0 | 78.0 | 73.1 | |
| Assisted Vaginal | 0.71 | 1.56 | 0 | 0 | |
| Scheduled cesarean | 6.43 | 3.13 | 12.0 | 3.85 | |
| Unscheduled cesarean | 17.1 | 20.31 | 10.0 | 23.1 | |
| Birthweight a (kg) | 3.43 (0.47) | 3.42 (.51) | 3.40 (0.46) | 3.52 (0.38) | 0.56 |
| Fetal sex (male) | 49.3 | 50.0 | 48.0 | 50.0 | 0.98 |
| Initiated BF | 100 | 100 | 100 | 100 | |
| Return to work (%) | 75.4 | 78.7 | 70.3 | 75.0 | 0.64 |
| Age at return to work a (months) | 2.99 (1.2) | 3.04 (1.2) | 2.77 (1.2) | 3.25(1.4) | 0.47 |
BF – breastfeeding, EBF – exclusive breastfeeding, EFF – exclusive formula feeding, MBFF – mixed breast & formula feeding, GA – gestational age,
a
mean (SD)
b
reported all that apply