Table II. Relative risks of psoriasis by reported history of oral conditions.
| Cases | Person-years | Age-adjusted RR (95%CI) | P-value | Multivariate* RR (95%CI) | P-value | |
|---|---|---|---|---|---|---|
| Periodontal bone loss | ||||||
| No | 447 | 639,651 | 1.00 | 1.00 | ||
| Yes | 107 | 103,370 | 1.47 (1.19-1.82) | 0.0003 | 1.40 (1.13-1.73) | 0.002 |
| Periodontal bone loss severity | ||||||
| Mild | 65 | 65,051 | 1.40 (1.08-1.82) | 0.01 | 1.35 (1.03-1.75) | 0.03 |
| Moderate-severe | 42 | 38,319 | 1.60 (1.16-2.20) | 0.004 | 1.49 (1.08-2.05) | 0.016 |
*
Adjusted for age, bmi (<21, 21-22.9, 23-24.9, 25-26.9, 27.0-29.9, 30.0-32.9, 33-34.9, and 35-39.9, and 40 or more k/m2), smoking status/intensity (as never, past, current 1-14,15-24 or 25 or more cigarettes per day), alcohol intake (none, 1-4, 5-9, 10-14, 15-29, 30 or more grams per day), and physical activity (met-hours/week, grouped in quintiles), and number of teeth(0-24,25-32).