Canadian Cancer Registry

Age-standardization

Since the age structure of a population is a major determinant of its cancer burden, direct comparisons of basic rates across geographic regions or time periods would be misleading if age composition differed. The Canadian Cancer Registry (CCR) uses age-standardization to remove the impact of age composition from comparisons across geographic regions or time periods. Specifically, the July 1, 1991 Canadian population is used as the standard population (see Table below), and the age-standardized rates can be interpreted as the rates that would have been observed if the populations of interest had the same age distribution as the standard population.

Canada, July 1, 1991 Population by Age Group (both sexes combined)
Table summary
This table displays the results of Canada. The information is grouped by Age Group (appearing as row headers), Population (appearing as column headers).
Age Group Population
0 to 4 years 1,953,346
5 to 9 years 1,953,045
10 to 14 years 1,913,115
15 to 19 years 1,926,090
20 to 24 years 2,109,452
25 to 29 years 2,529,239
30 to 34 years 2,598,289
35 to 39 years 2,344,872
40 to 44 years 2,138,891
45 to 49 years 1,674,153
50 to 54 years 1,339,902
55 to 59 years 1,238,441
60 to 64 years 1,190,217
65 to 69 years 1,084,588
70 to 74 years 834,024
75 to 79 years 622,221
80 to 84 years 382,303
85 years and over 287,877
Total 28,120,065
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