Table 1 Patient characteristics
Total | Nonmalignant pulmonary disease | Lung cancer | p-value | ||||
|---|---|---|---|---|---|---|---|
Total number, n (%) | 536 | (100) | 107 | (20) | 429 | (80) | |
Male, n (%) | 335 | (63) | 57 | (53) | 278 | (65) | 0.028 |
Age, median years (range) | 74 | (36–98) | 77 | (60–92) | 74 | (36–98) | < 0.001 |
Needing help with ADL, n (%)a | 390 | (73) | 90 | (84) | 300 | (70) | 0.001 |
Smoking status, n (%) | 0.063 | ||||||
Never-smoker | 85 | (15.9) | 25 | (23.4) | 60 | (14.0) | |
Ex-smoker | 322 | (60.1) | 62 | (57.9) | 260 | (60.6) | |
Current smoker | 124 | (23.1) | 19 | (17.8) | 105 | (24.5) | |
Unknown | 5 | (0.9) | 1 | (0.9) | 4 | (0.9) | |
Pack-years, median (range)b | 40 | (1-100) | 40 | (2–80) | 40 | (1-100) | 0.342 |
Charlson comorbidity index, median (range) | 9 | (2–16) | 6 | (2–12) | 10 | (4–16) | < 0.001 |
Dead by the end of follow-up | 510 | (95) | 93 | (87) | 417 | (97) | < 0.001 |