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Table 1 Characteristics of participating cohorts

From: Body mass index and lung cancer risk: a pooled analysis based on nested case-control studies from four cohort studies

Study Location Enrollment years Baseline cohort Age at enrollment Follow-up mean years Source of height and weight data Cases/Controls (N = 4172/8471) Matching
Carotene and Retinol Efficacy Trial USA 1985–1994 18,314 45–69 11.5 Measured 787/1564 Age (± 4 years), sex, race, enrollment year (2-years intervals), baseline measures of smoking status (current or former), asbestos exposure (yes or no) and duration of follow up
European Prospective Investigation into Cancer and Nutrition Europe 1992–2000 521,468 35–70 10.1 Mostly Measured, except for some EPIC centers a 1242/2622 Age, sex, smoking status, and country of recruitment
Shanghai Cohort Study China 1986–1989 18,244 45–64 15.8 Self-reported 965/1929 Age and sex
Singapore Chinese Health Study Singapore 1993–1998 63,257 45–74 10.0 Self-reported 1178/2356 Age and sex
  1. aOxford cohort, Norwegian cohort and approximately two-thirds of the French cohort, height and weight were self-reported