Table 2.
Type of water used for formula preparation according to the reason for formula feeding
| Type of watera | Total (n = 5689) | Formula-fed because of concern about radioactive contamination (n = 1154) | Formula-fed for other reasons (n = 4535) | p value |
|---|---|---|---|---|
| n (%) | n (%) | n (%) | ||
| Tap water | ||||
| Yes | 1729 (30.4) | 207 (17.9) | 1522 (33.6) | <0.001 |
| No | 3960 (69.6) | 947 (82.1) | 3013 (66.4) | |
| Bottled water | ||||
| Yes | 4295 (75.5) | 1019 (88.3) | 3276 (72.2) | <0.001 |
| No | 1394 (24.5) | 135 (11.7) | 1259 (27.8) | |
| Other (e.g., well water) | ||||
| Yes | 178 (3.1) | 30 (2.6) | 148 (3.3) | 0.25 |
| No | 5511 (96.9) | 1124 (97.4) | 4387 (96.7) | |
aMissing values were excluded