Table 1.
Descriptive characteristics of 5167 control subjects in the Lung Cancer Cohort Consortium.
| Characteristic | N (%) |
|---|---|
| Geographical region | |
| USA | 2259 (43.7%) |
| Nordic | 803 (15.6%) |
| Asian | 1747 (33.8%) |
| Australian | 358 (6.9%) |
| Age, years | |
| 49 or younger | 473 (9.1%) |
| 50 to 59 | 1448 (28.0%) |
| 60 to 69 | 2324 (45.0%) |
| 70 to 80 | 922 (17.9%) |
| Sex | |
| Male | 2810 (54.4%) |
| Female | 2357 (45.6%) |
| Body mass index | |
| Less than 18.5 | 121 (2.3%) |
| 18.5 to < 25 | 2608 (50.5%) |
| 25 to < 30 | 1802 (34.9%) |
| 30 or higher | 636 (12.3%) |
| Smoking status | |
| Never | 1264 (24.5%) |
| Former | 1453 (28.1%) |
| Current | 2450 (47.4%) |
| Race/ethnicity | |
| White | 2947 (57.0%) |
| Black | 247 (4.8%) |
| Asian | 1812 (35.1%) |
| Other | 161 (3.1%) |
The study population includes cancer-free control subjects from the Lung Cancer Cohort Consortium, which comprises 20 cohorts from the USA (Campaign Against Cancer and Stroke and Campaign Against Cancer and Heart Disease (CLUE, N = 171), American Cancer Society Cancer Prevention Study-II Nutrition Cohort (CPS-II, N = 179), Health Professionals Follow-Up Study (HPFS, N = 130), Multiethnic Cohort (MEC, N = 148), Nurses’ Health Study (NHS, N = 328), New York University Women’s Health Study (NYUWHS, N = 167), Physicians’ Health Study (PHS, N = 76), Prostate Lung Colorectal and Ovarian Cancer Screening Trial (PLCO, N = 440), Southern Community Cohort Study (SCCS, N = 209), Women’s Health Initiative (WHI, N = 228), Women’s Health Study (WHS, N = 183)), Nordic countries (Alpha-Tocopherol, Beta-Carotene Cancer Prevention Study (ATBC, N = 200), Trøndelag Health Study (HUNT, N = 174), Northern Sweden Health and Disease Study Cohort (NSHDS, N = 230), Malmö Diet and Cancer Study (MDCS, N = 199)), Asia (Shanghai Men’s Health Study (SMHS, N = 419), Shanghai Women’s Health Study (SWHS,N = 417), Shanghai Cohort Study (SCS, N = 502), Singapore Chinese Health Study (SCHS, N = 409)), and Australia (Melbourne Collaborative Cohort Study (MCCS, N = 358)). Details regarding the data from individual cohorts have been published previously7.