Table 2 Odds ratios with 95% confidence intervals of exclusive breastfeeding at hospital discharge^a

Mother’s age at delivery in years

0.97 [0.96, 0.98]

0.98 [0.96, 1.00]

 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]

  < 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]

–

 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]

–

 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]

–

 Female

Reference

–

 Male

1.02 [0.85, 1.21]

–

  < 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]