Table 1.
Demographic and Clinic Characteristics
| Characteristics | Number of COPD Cases (%) |
Number of Controls (%) (Without COPD and Lung Cancer) N=893 | P-valuea | P-valueb | P-valuec | P-valued | ||
|---|---|---|---|---|---|---|---|---|
| With Lung Cancer N=432 | Without Lung Cancer N=188 | Total N=620 | ||||||
| Sex | ||||||||
| Male | 240(55.56%) | 82(43.62%) | 322(51.94%) | 348(38.97%) | 0.008 | <0.001 | 0.271 | <0.001 |
| Female | 192(44.44%) | 106(56.38%) | 298(48.06%) | 545(61.03%) | ||||
| Age± SD (year) | 66.99± 8.54 | 67.27± 9.67 | 67.08± 8.89 | 64.97± 9.97 | 0.731 | <0.001 | 0.004 | <0.001 |
| Smoking Status | ||||||||
| Never | 31(7.18%) | 29(15.43%) | 60(9.67%) | 564(63.16%) | ||||
| Former | 217(50.23%) | 94(50.00%) | 311(50.16%) | 195(21.84%) | 0.004 | <0.001 | <0.001 | <0.001 |
| Current | 184(42.59%) | 65(34.57%) | 249(40.16%) | 134(15.01%) | ||||
| Pack-years | ||||||||
| 0 & never smoker | 31 (7.18%) | 33 (17.55%) | 64 (10.32%) | 570 (63.83%) | ||||
| 1-20 | 29 (6.71%) | 15 (7.98%) | 44 (7.10%) | 32 (3.58%) | <0.001 | <0.001 | <0.001 | <0.001 |
| 21-40 | 75 (17.36%) | 43 (22.87%) | 118 (19.03%) | 121 (13.55%) | ||||
| > 40 | 297 (68.75%) | 97 (51.60%) | 394 (63.55%) | 170 (19.04%) | ||||
a
P-value for the comparison between COPD cases with lung cancer and COPD cases without lung cancer.
b
P-value for the comparison between COPD cases with lung cancer and controls.
c
P-value for the comparison between COPD cases without lung cancer and controls.
d
P-value for the comparison between all COPD cases and controls.