Smoking habits | Cases | Adjusted | RR (CI) |
---|---|---|---|
Current smokers | 278 | Nonea | 0.63 (0.43-0.93) |
 |  | Age, gender | 0.69 (0.46-1.03) |
Former smokers | 176 | Nonea | 0.76 (0.50-1.17) |
 |  | Age, gender | 0.99 (0.62-1.56) |
Current and former smokers | 454 | Nonea | 0.72 (0.54-0.95) |
 |  | Smoking statusa | 0.69 (0.52-0.91) |
 |  | Age, gender, smoking statusa | 0.81 (0.60-1.09) |