Table 4.
Association between disaster-related factors and formula feeding because of concern about radioactive contamination
| Disaster-related factors | Univariatea | Multivariateb | ||
|---|---|---|---|---|
| ORc | 95 % CId | OR | 95 % CI | |
| Residential region | ||||
| Within evacuation area (vs outside evacuation area) | 1.34 | 1.09–1.65 | 1.27 | 1.02–1.58 |
| Continuation of scheduled antenatal care | ||||
| No (vs yes) | 1.54 | 1.30–1.81 | 1.31 | 1.09–1.57 |
| Switched to different medical institution of own accord | ||||
| Yes (vs no) | 0.86 | 0.72–1.02 | ||
aIndependent variables were 1 = formula feeding because of concern about radioactive contamination and 0 = exclusive breast feeding
bAdjusted for maternal factors (age, parity, and depressive symptoms), obstetric factors (duration between disaster and delivery, type of pregnancy, illness during pregnancy, and delivery method), and child-related factors (gender, body weight, congenital anomalies, and neonatal asphyxia)
c CI confidence interval
d OR odds ratio