Patients | Controls | |||||
---|---|---|---|---|---|---|
Item | n | % | n | % | P-value | |
Number | 108 | 121 | ||||
Gender | ||||||
males | 71 | 65.7 | 74 | 61.2 | 0.491a | |
females | 37 | 34.3 | 47 | 38.8 | ||
Age | ||||||
~64 | 40 | 37.0 | 50 | 41.3 | ||
65~69 | 17 | 15.7 | 29 | 24.0 | ||
70~74 | 30 | 27.8 | 20 | 16.5 | ||
75~ | 19 | 17.6 | 22 | 18.2 | ||
unknown | 2 | 1.9 | 0 | 0.0 | ||
Mean ± S.D. | 65.5 ± 9.4 | 67.4 ± 6.7 | 0.078b | |||
Smoking status (Pack-years) | ||||||
Never (Pack-years = 0) | 32 | 29.6 | 55 | 45.5 | ||
Ever (Pack-years > 0) | 74 | 68.5 | 60 | 49.6 | ||
unknown | 2 | 1.9 | 6 | 5.0 | ||
Mean ± S.D. | 33.8 ± 31.7 | 25.6 ± 35.1 | 0.069b | |||
Histological type | ||||||
adenocarcinoma | 67 | 62.0 | ||||
squamous cell carcinoma | 31 | 28.7 | ||||
others | 10 | 9.3 |