Is it necessary to correct census populations to measure mortality change? The case of the province of Quebec 1971-76. [Tables]

9 tables with data from Canada and/or individual Canadian provinces are used to illustrate the issue of adjusting mortality data collected through censuses. The tables show that life expectancy at birth was higher in every province for females in the 1970-72 period than for males. In addition the increase in life expectancy between 1970-72 and 1975-77 was greater for females than for males. A table showing data for Prince Edward Island shows in fact that male life expectancy at practically every age between birth and 85 declined slightly in the years between the data collection of 1970-72 and the next collection of 1975-77 while life expectancy for females rose at every age during the same period. Significance tests were run on the variations in years of life expectancy between noncorrected and corrected abridged life tables for Quebec.