Potential Risk Factor | No. of Cases/Person-Years | Resolution Rate per 100 Person-Years | HR (95% CI)a | P Value |
---|---|---|---|---|
Demographic factors | ||||
Age in years | ||||
8–12 | 80/176 | 45 | 1.0 (ref) | |
4–7 | 82/137 | 60 | 1.5 (1.1–2.0) | .02 |
Age, per year decrease | – | – | 1.12 (1.04–1.20) | .003 |
Sex | ||||
Female | 76/164 | 46 | 1.0 (ref) | |
Male | 86/149 | 58 | 1.3 (0.9–1.7) | .13 |
Skin type | ||||
Caucasian | 129/274 | 47 | 1.0 (ref) | |
Non-Caucasian | 33/39 | 85 | 2.0 (1.3–2.9) | .001 |
Wart factors | ||||
Type | ||||
Common only | 50/94 | 53 | 1.0 (ref) | |
Plantar only | 96/181 | 53 | 1.0 (0.7–1.4) | .88 |
Both | 16/38 | 42 | 0.7 (0.4–1.2) | .19 |
Number | ||||
Single | 90/184 | 49 | 1.0 (ref) | |
Multiple | 72/129 | 56 | 1.1 (0.8–1.4) | .71 |
Number, per additional wart | – | – | 1.03 (0.96–1.10) | .43 |
Size | ||||
≥1 cm | 55/117 | 47 | 1.0 (ref) | |
<1 cm | 106/194 | 55 | 1.2 (0.9–1.6) | .29 |
HR=hazard ratio; ref=reference group.
↵a Generated by univariate Cox proportional hazards model.