(a)
| CPI | Toothbrushing YES | Tooth-brushing NOT | OR | CI95% | P-value |
|---|---|---|---|---|---|
| 0 | 91 (13.1%) | 171 (24.7%) | 0.5 | 0.4–0.7 | <.05 |
| 1 | 53 (7.7%) | 139 (20.1%) | 0.4 | 0.3–0.5 | |
| 2 | 103 (14.9%) | 135 (19.5%) | 0.8 | 0.6–1.0 |
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