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Smoking status between patients who had anal abscess and anal fistula diseases and patients with other anorectal complaints
| Variables | Controls (n = 471) | Cases (n = 334) | χ2 | P |
|---|---|---|---|---|
| Smoking status, n (%) | ||||
| Non-smoker | 387 (82.2) | 125 (37.4) | 205.171 | <0.001 |
| Former-smoker | 25 (5.3) | 7 (2.1) | ||
| Current-smoker | 59 (12.5) | 202 (60.5) |
Mann-Whitney U-test and Chi-square test were used to examine differences between groups.
