Table 1.
Characteristics of patients with periodontitis and controls.
| Patients | Controls | P | OR (95%CI) | |
|---|---|---|---|---|
| All subjects | N = 203 | N = 213 | ||
| Gender (n and %)a | ||||
| Male | 99 (48.8) | 83 (39.0) | ||
| Female | 104 (51.2) | 130 (61.0) | 0.06 | |
| Age mean ± SD (year)b | 47.8 ± 9.0 | 46.0 ± 8.8 | 0.04 | |
| Smoking habit (n and %)a | ||||
| Nonsmokers | 121 (59.6) | 159 (74.7) | ||
| Smokers | 82 (40.4) | 54 (25.3) | <0.01 | 2.0 (1.31-3.03) |
|
| ||||
| Nonsmokers | N = 121 | N = 159 | ||
| Gender (n and %)a | ||||
| Male | 56 (46.3) | 54 (34.0) | ||
| Female | 65 (53.7) | 105 (66.0) | 0.05 | |
| Age mean ± SD (year)b | 48.2 ± 9.1 | 46.1 ± 8.6 | 0.04 | |
n: number of individuals; N: population size; %: percentage; SD: standard deviation; P: P value; OR: odds ratio; CI: confidence interval. aComparison by Fisher's exact test; bcomparison by the Student t-test.