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Summarizing indices for comparison of cancer incidence data

✍ Scribed by Richard Doll; Paula Cook

Publisher
John Wiley and Sons
Year
1967
Tongue
French
Weight
610 KB
Volume
2
Category
Article
ISSN
0020-7136

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✦ Synopsis

The desirability of achieving agreement on a method of summarizing cancer incidence is emphasized, and the advantages and disadvantages of the use of the traditional standardized incidence rates are discussed.

It is concluded that: I ) No single index is capable of replacing the individual sex-and age-specific incidence rates, and these should always be presented when basic cancer incidence data are published.

2 ) For aetiological studies age-specific incidence rates can usefully be summarized in two indices, one ( a truncated standardized incidence) showing a standardized incidence over a restricted age range, and the other indicating the rate at which cancer incidence increases with age.

3 ) An appropriate truncated rate for most epithelial cancers is one for the age range of 35 to 64 years, using weights of 6 , 6 , 6 , 5 , 4 and 4 for the individual 5-year age groups, derived from Segi's (1960) world standard population. For other cancers, age ranges of 0 to 14 years and of 0 to 44 years would be more suitable, with weights of 12, I0 and 9,

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