Table 2.
Odds ratios with 95% confidence intervals of exclusive breastfeeding at hospital dischargea
| Univariable analysisb | Multivariable analysisc | |
|---|---|---|
| Mother’s age at delivery in years | 0.97 [0.96, 0.98] | 0.98 [0.96, 1.00] |
| Marital status | ||
| Single | 1.26 [0.96, 1.69] | – |
| Married | Reference | – |
| Unknown | 1.17 [0.97, 1.41] | – |
| Education level | – | |
| Secondary school or less | Reference | Reference |
| Higher education | 0.66 [0.55, 0.79] | 0.75 [0.59, 0.97] |
| Unknown | 1.20 [0.84, 1.77] | 1.28 [0.82, 2.09] |
| BMI in kg/m2 | ||
| < 18.5 | 1.06 [0.74, 1.56] | – |
| 18.5- < 25 | Reference | – |
| 25- < 30 | 1.06 [0.84, 1.36] | – |
| ≥ 30 | 0.77 [0.58, 1.03] | – |
| Parity | ||
| 0 | Reference | Reference |
| 1 | 1.28 [1.04, 1.56] | 1.13 [0.86, 1.47] |
| 2 | 1.01 [0.80, 1.30] | 0.89 [0.64, 1.26] |
| ≥ 3 | 0.81 [0.56, 1.18] | 0.81 [0.49, 1.37] |
| In vitro fertilization for current birth | 0.72 [0.31, 2.08] | – |
| Mode of delivery | ||
| Vaginal delivery | Reference | Reference |
| Caesarean delivery | 0.61 [0.52, 0.73] | 0.47 [0.37, 0.60] |
| Maternal intrapartum complications | 0.88 [0.61, 1.32] | – |
| Newborn sex | ||
| Female | Reference | – |
| Male | 1.02 [0.85, 1.21] | – |
| Birthweight in g | ||
| < 2500 | 0.28 [0.18, .44] | 0.51 [0.27, 0.97] |
| 2500–2999 | 0.76 [0.60, 0.97] | 0.83 [0.61, 1.14] |
| 3000–3499 | Reference | Reference |
| 3500–3999 | 1.11 [0.90, 1.38] | 1.17 [0.88, 1.55] |
| ≥ 4000 | 1.07 [0.77, 1.53] | 1.18 [0.78, 1.86] |
| Admission to NICU | 0.02 [0.02, 0.03] | 0.02 [0.02, 0.03] |
aThe Georgian Birth Registry, November–December 2017 (n = 7134)
BMI body mass index, NICU neonatal intensive care unit
bComplete case analysis: education level n = 7133, BMI n = 6197, mode of delivery n = 7130, newborn sex n = 7132, birthweight n = 7127, and admission to NICU n = 7005
cComplete case analysis: n = 6993