观察组(n = 50)控制组(n = 56) n (%) n (%) statistic value P | ||||
男 | 25 (50) | 32 (57.1) | x2 = 0.542 | P = 0.462 |
女 | 25 (50) | 24 (42.9) |
|
|
年龄 | 62.34 ± 8.97 | 59.75 ± 9.81 | t = 1.413 | P = 0.161 |
有吸烟史 | 17 (34) | 20 (35.7) | x2 = 0.034 | P = 0.853 |
无吸烟史 | 33 (66) | 36 (64.3) |
|
|