Risk factors for lung cancer in young adults.
Risk factors for early onset of lung cancer are relatively unknown. In a case-control study, carried out in Germany between 1990 and 1996, the effects of smoking and familial aggregation of cancer were compared in 251 young cases and 280 young controls (< or = 45 years) and in 2,009 older cases and 2,039 older controls (55-69 years). The male/female ratio was 2.6/1 in young patients and 5.6/1 in older patients. Adenocarcinomas were more frequent in young men than in older men (41 % vs. 28%). Duration of smoking and amount smoked showed significantly increased odds ratios for lung cancer in both age groups. Lung cancer in a first degree relative was associated with a 2.6-fold (95% confidence interval (CI) 1.1-6.0) increase in the risk of lung cancer in the young age group, but no elevated risk was seen in the older group (OR = 1.2, 95% CI 0.9-1.6). Smoking-related cancer in relatives with the age at diagnosis under 46 years was associated with an increased risk of lung cancer in the young group (OR = 5.6, 95% CI 0.7-46.9) but not in the older group (OR = 0.7, 95% CI 0.3-1.5). Results indicated that lung cancer risk in young and older age groups shows remarkable differences with respect to sex, histologic type, and genetic predisposition.
Kreuzer
M
M
Institute of Epidemiology, GSF-National Research Center for Environment and Health, Neuherberg, Germany.
Kreienbrock
L
L
Gerken
M
M
Heinrich
J
J
Bruske-Hohlfeld
I
I
Muller
K M
KM
Wichmann
H E
HE
D000230:Adenocarcinoma / Q000453:epidemiology; D000328:Adult; D016022:Case-Control Studies; D005192:Family Health; D005260:Female; D005858:Germany / Q000453:epidemiology; D006801:Humans; D016015:Logistic Models; D008175:Lung Neoplasms / Q000453:epidemiology* / Q000235:genetics; D008297:Male; D008875:Middle Aged; D012307:Risk Factors; D012907:Smoking