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Head lice infestation rate in intervention and control groups at initial, 7, 14, and 21 days during examinations
| Examiation time | Intervention group | Control group | p-valuea | ||
|---|---|---|---|---|---|
| Examined (n) | Infested n(%) | Examined (n) | Infested n(%) | ||
| Initial | 150 | 103 (68.6) | 150 | 99 (66.0) | 0.622 |
| 7 days | 148 | 73 (49.3) | 149 | 98 (65.7) | 0.003 |
| 14 days | 150 | 32 (21.3) | 150 | 96 (64.0) | 0.0001 |
| 21 days | 147 | 10 (6.8) | 148 | 92 (62.1) | 0.0001 |
aChi-square test
