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When the large variations in the age and sex incidence of phthisis shown in this table
are considered in relation to the variations in the age and sex constitution of the populations
of the several metropolitan boroughs, it is obvious that the "all ages" death-rates calculated
on the total deaths and population of each of these boroughs will show marked differences on
this account alone. Thus, as will be seen, on referring to the first column of the table showing
the "standard death-rate" in each borough, the population of Bethnal-green applied to the
London death-rates at each age and sex gives an "all ages" death-rate of 1*59 per 1,000
living, while the population of Holborn applied to the same death-rates at each age and sex
gives an "all ages" death-rate of 1.97 per 1,000 living, i.e., a death-rate nearly 24 per cent.
in excess of that of Bethnal-green, solely due to differences in the age and sex constitution
of the two populations.
The "factors for correction" have been calculated upon the populations of the several
boroughs as enumerated at the census of 1901, and the population of the principal workhouses
and infirmaries (where these institutions are situated outside the area from which their inmates
are drawn) have been included with the populations to which they properly belong (see
page 14 ante).
The following table shows the number of deaths from phthisis at several age-periods in
each of the metropolitan boroughs. For the purposes of this table deaths occurring in public
institutions belonging to London have been distributed to the sanitary areas in which the deceased
had previously resided. (See footnote (1), page 12.)