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Report of the County Medical Officer—General.
11
It will be seen from the foregoing table that in the quinquennium 1908-12 the London death-rate
was exceeded by the death-rates of Paris, Copenhagen, Petrograd, Berlin, Vienna, and New
York, and in 1913 was only exceeded by that of Paris, Petrograd and Vienna.

Death-rates
in London—
age and sex
distribution.
It will be seen from this table that the rate of mortality in 1913 was lower than that of the
period 1901-1910 at each age-period of life and for each sex, except among males aged 15-20,
65-75 and 75-85, and among females aged 10-20 and 75-85.
In previous annual reports it has been shown that a more accurate estimate of the effect on the
community of fluctuations of mortality could be obtained by the use of a Life Table, the method adopted
being similar to that employed by Dr. Tatham in a report on the health of greater Manchester for the
period 1891-3. The advantages of this method and the formulae used are set out in some detail in the
London Life Table appended to the annual report for 1901. It will be seen from the description therein
contained that in order to apply this method of comparison it is necessary in the first place to ascertain
from the Life Table the mean future lifetime of males and females in groups of ages corresponding to those age-groups to which the deaths relate.
Fluctuations
of mortality.

In the following table the number of deaths occurring in the year 1913 at each age-period and
for each sex is compared with the number of deaths which Would have occurred had the death-rates of
the period 1901-1910 been maintained in that year.

23610
c 2