Demographic and disease characteristics of lung cancer cases and controls
| Cases (N=440) | Controls (N=845) | |
| n (%) | n (%) | |
| Age (years) | ||
| ≤39 | 5 (0.6) | 25 (3.0) |
| 40 to 49 | 42 (5.0) | 70 (8.3) |
| 50 to 59 | 116 (13.7) | 197 (23.3) |
| 60 to 69 | 206 (24.4) | 402 (47.6) |
| ≥70 | 71 (8.4) | 151 (17.9) |
| Race | ||
| Caucasian | 420 (95.5) | 815 (96.5) |
| African-American | 2 (0.5) | 3 (0.4) |
| Asian | 2 (0.5) | 11 (1.3) |
| Native American/Eskimo | 7 (1.6) | 4 (0.5) |
| Other | 9 (2.1) | 11 (1.3) |
| Refused | 0 (0) | 1 (0.1) |
| Smoking status | ||
| Never | 13 (3.0) | 243 (28.8) |
| Former | 162 (36.8) | 435 (51.5) |
| Current | 265 (60.2) | 166 (19.7) |
| Missing | 0 (0) | 1 (0.1) |
| Smoking pack-years | ||
| Never | 13 (3.0) | 243 (28.8) |
| >0 to <20 | 19 (4.3) | 204 (24.1) |
| 20 to <40 | 84 (19.1) | 193 (22.8) |
| 40 to <60 | 142 (32.3) | 107 (12.7) |
| 60 to <80 | 84 (19.1) | 44 (5.2) |
| ≥80 | 98 (22.3) | 54 (6.4) |
| Education | ||
| <High school | 94 (21.4) | 87 (10.3) |
| High school/vocational school graduate | 182 (41.4) | 290 (34.3) |
| College | 163 (37.0) | 468 (55.4) |
| Missing | 1 (0.2) | 0 (0) |
| Total number of jobs | ||
| <6 | 121 (27.5) | 169 (20.0) |
| 6 to 7 | 115 (26.1) | 185 (21.9) |
| 8 to 10 | 116 (26.4) | 231 (27.3) |
| ≥11 | 88 (20.0) | 260 (30.8) |
| Total years worked | ||
| <35 | 115 (26.1) | 188 (22.3) |
| 35 to <41 | 111 (25.2) | 213 (25.2) |
| 41 to <46 | 110 (25.0) | 226 (26.8) |
| >46 | 104 (23.6) | 217 (25.7) |
| Age at first job | ||
| ≤16 | 63 (14.3) | 114 (13.5) |
| 17 | 265 (60.2) | 488 (57.8) |
| ≥18 | 112 (25.2) | 242 (28.7) |
| Histology groupings | ||
| Carcinoma not otherwise specified | 57 (13.0) | |
| Large cell | 15 (3.4) | |
| Small cell | 85 (19.3) | |
| Squamous | 124 (28.2) | |
| Adenocarcinoma | 154 (35.0) | |
| Other | 5 (1.1) | |
| Stage | ||
| Local | 82 (18.6) | |
| Regional | 176 (40.0) | |
| Distant | 145 (33.0) | |
| Unknown | 37 (8.4) | |