TABLE 1.
Sample characteristics of cases and controls of participating ILCCO studies.
| All | Controls | LC cases | |||
|---|---|---|---|---|---|
| n | n | % | n | % | |
| Total | 14,489 | 5562 | 100% (38%) | 8927 | 100% (62%) |
| Source study | |||||
| CAPUA | 1683 | 827 | 15% (49%) | 856 | 10% (51%) |
| EAGLE | 3856 | 1983 | 36% (51%) | 1873 | 21% (49%) |
| HSPH | 5858 | 1720 | 31% (29%) | 4138 | 46% (71%) |
| NICCC‐LCA | 1184 | 525 | 9% (44%) | 659 | 7% (56%) |
| MSH‐PMH | 1908 | 507 | 9% (27%) | 1401 | 16% (73%) |
| Smoking status | |||||
| Never smokers | 2777 | 1888 | 34% (68%) | 889 | 10% (32%) |
| Former smokers | 6479 | 2495 | 45% (39%) | 3984 | 45% (61%) |
| Current smokers | 5233 | 1179 | 21% (23%) | 4054 | 45% (77%) |
| Sex | |||||
| Male | 9023 | 3601 | 65% (40%) | 5422 | 61% (60%) |
| Female | 5466 | 1961 | 35% (36%) | 3505 | 39% (64%) |
| Histological subtype | |||||
| AdenoLC | – | – | – | 4890 | 55% |
| SqCLC | – | – | – | 2210 | 25% |
| SCLC | – | – | – | 730 | 8% |
| LCLC | – | – | – | 408 | 5% |
| Unknown | – | – | – | 689 | 8% |
| Mean | Median | Range | Mean | Median | Range | ||
|---|---|---|---|---|---|---|---|
| Pack years [py] | 20.6 | 10.0 | 0–260 | 46.9 | 42.9 | 0–363 | |
| Never smokers | – | – | – | – | – | – | |
| Former smokers | 27.2 | 20.8 | 0.01–211.5 | 46.4 | 40.0 | 0.02–272 | |
| Current smokers | 39.4 | 35.0 | 0.05–260.0 | 57.7 | 51.0 | 0.03–363 | |
| sIR [Bq/m3] | 84.3 | 64.8 | 7–853 | 92.9 | 74.0 | 4–835 | |
| CAPUA | 96.4 | 89.3 | 13.0–287.2 | 92.9 | 89.3 | 13.0–137.8 | |
| EAGLE | 63.3 | 64.2 | 21.2–249.2 | 64.6 | 64.3 | 23.8–249.2 | |
| HSPH | 127.0 | 152.0 | 11.0–596.0 | 121.6 | 144.0 | 4.0–835.0 | |
| NICCC‐LCA | 45.0 | 42.9 | 31.8–72.2 | 45.5 | 42.9 | 33.4–79.0 | |
| MSH‐PMH | 52.1 | 50.3 | 39.5–154.1 | 67.6 | 55.5 | 27.5–258.7 | |
| Age (years) | 63.4 | 65.0 | 19–96 | 65.7 | 66.8 | 22–95 |
Note: % column‐% (row‐%).