From: Association between cesarean section and constipation in infants: the Japan Environment and Children’s Study (JECS)
Vaginal delivery (n = 67, 504)
Cesarean delivery (n = 15,515)
n (%)
Frequency (week)
0–2
940 (1.4)
198 (1.3)
3–6
7934 (11.8)
1737 (11.2)
7–14
49,567 (73.4)
11,359 (73.2)
≥ 15
9063 (13.4)
2221 (14.3)