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52
For the purpose of enabling the incidence of cancer on the several populations of the sanitary
areas to be more precisely stated, factors have been calculated for correcting the death.rates, as far
as possible, for differences in the age and sex constitution of the several populations concerned.
These factors arc shown in the following table, together with the death.rates for each sanitary area,
corrected by their application. Owing to the changes of area in the sanitary districts of London
caused by the London Government Act of 1899, the death.rates since 1900 are the only figures
available for comparative purposes, but it can be seen from these figures that differences in
the age and sex constitution of the population are partially responsible for the differences in
the crude death.rates obtaining in the several districts.
Cancer.

It will be seen from the foregoing table (comparing the corrected death-rates) that in the quinquennium
1902-6 among the several sanitary areas the City of London (1.11) had the highest cancer
death-rate and Kensington (0.84) and Greenwich (0.84) the lowest; in the year 1907 the City of
London (1.09) had again the highest, the lowest obtaining in Deptford (0.73).
The following tables (a), (b), and (c) show the deaths during 1907 (365 days) in each of the
sanitary districts from cancer at several age-periods under three headings, viz., sarcoma, carcinoma, and
cancer, deaths classified under the last-named term being those for which the information given on the certificate
of death was insufficient to further distinguish them for purposes of classification.

continued on next page,
1 See footnote (.), page 47.
2 See footnote (]), page 8.