The redundant factor method and bladder cancer mortality.
Of the three factors, age at death, epoch of death, and epoch of birth, one seems almost superfluous. It may nevertheless be worthwhile to include all three in a mortality analysis, allowing for the constraints that the redundancy imposes. This procedure is applied to data for England and Wales on bladder cancer mortality from 1951 to 1970.
D000328:Adult; D000367:Age Factors; D000368:Aged; D004739:England; D004812:Epidemiologic Methods; D005260:Female; D006801:Humans; D008297:Male; D008875:Middle Aged; D013997:Time Factors; D001749:Urinary Bladder Neoplasms / Q000401:mortality*; D014852:Wales