Infant age (month)

Cesarean section n (%)

Vaginal delivery n (%)

Odds Ratio

CI_95%

P-value

1

302 (89.6)

195 (95.1)

2.260

1.094 - 4.668

0.025

2

284 (84.3)

191 (93.2)

2.546

1.374 - 4.718

0.002

3

254 (75.8)

186 (90.7)

3.122

1.83 - 5.326

0.000

4

240 (71.2)

185 (90.2)

3.739

2.227 - 6.277

0.000

5

214 (63.5)

173 (84.8)

3.208

2.062 - 4.99

0.000

6

207 (61.4)

173 (84.8)

3.395

2.195 - 5.252

0.000