Table 1.
Combined
|
Female
|
Male
|
|||||||
---|---|---|---|---|---|---|---|---|---|
cases n=624 | controls n=766 | P | cases n=307 | controls n=386 | P | cases n=317 | controls n=380 | P | |
|
|
|
|||||||
Sex, No. (%) | 0.6582 | ||||||||
Male | 317(50.80) | 380(49.61) | |||||||
Female | 307(49.20) | 386(50.39) | |||||||
Smoking Status, No. (%) | 0.0576 | 0.0247 | 0.4502 | ||||||
Never | 142(22.76) | 136(17.75) | 100(32.57) | 90(23.32) | 42(13.25) | 46(12.11) | |||
Former | 264(42.31) | 356(46.48) | 104(33.88) | 146(37.82) | 160(50.47) | 210(55.26) | |||
Current | 218(34.94) | 274(35.77) | 103(33.55) | 150(38.86) | 115(36.28) | 124(32.63) | |||
Mean age (SD) | 61.8(11.6) | 60.5(10.3) | 0.0217 | 61.4(11.6) | 59.6(10.8) | 0.0248 | 62.2(11.6) | 61.6(9.8) | 0.2901 |
No. of cigarettes per day (SD) | 21.3(16.6) | 20.0(15.3) | 0.1552 | 15.9(14.3) | 16.6(14.0) | 04538 | 26.6(17.0) | 23.4(15.9) | 0.0106 |
Years smoked (SD) | 27.4(18.5) | 25.4(16.8) | 0.0269 | 23.5(19.5) | 23.2(17.0) | 0.9228 | 31.2(16.7) | 27.5(16.4) | 0.0040 |
P values were calculated with a X2 test for categorical variables and with a Wilcoxon test for continuous variables. All statistical tests were two-sided.
Never smokers were defined as those who had smoked fewer than 100 cigarettes in their lifetime.