Kidney cancer INDEX

Estimates from conditional logistic regression models, conditioned on sex, age, study center, and adjusted for period of interview, education, alcohol consumption, tobacco smoking, body mass index, occupational physical activity, family history of kidney cancer, and total energy intake. b Reference category. 

The following covariates individually made no substantial changes in the excess risk fractions for men or women race, fat in diet, body mass index, use of Tagamet, use of Valium, Librium, or Tylenol, ever had kidney disease, ever had bronchitis, marital status, and ever had cancer. Age was represented by a cubic polynomial. 

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