Hints from the Health Department. Leaflet from the archive of the Society of Medical Officers of Health. Credit: Wellcome Collection, London
[Report of the Medical Officer of Health for London County Council]
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Metropolitan boroughs in topographical order. | Birth-rate per 1,000 living. | Legitimate births per 100 married women aged 15-45. | Illegitimate births per 100 total births. | Infant Mortality. | ||||||||
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1921-23 | 1930-32 | Increase (+) Decrease (-) Per cent. | 1921-23 | 1930-32 | Increase (4-) Decrease (—) per cent. | 1921-23 | 1930-32 | Increase ( + ) Decrease (-) per cent. | 1921-23 | 1930-32 | Increase ( + ) Decrease '-) per cent. | |
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Although the county of London has long ceased, from an actuarial point of
view, to be a suitable unit for the calculation of a life-table, owing to the large proportion
of the population which has moved to adjacent areas, a life-table is nevertheless
of value for statistical purposes as it affords a convenient and reliable means of
comparing the principal vital statistics of the county at different periods of time.
For such purposes the short method of life-table construction gives sufficiently
accurate figures, and by the method devised by Dr. E. C. Snow life-tables have been
calculated for the London population for successive decennial periods from 1841-50
to 1901-10, the main features of which are set out in the Annual Report for 1923
(Volume III, pages 10-14).
Owing to war conditions it is not practicable to calculate the life-table for the
decennial period 1911-20, but in order to provide an approximate figure for this
period, apart from the war, the mean of the values given by life-tables constructed
for the years 1911-12 and 1920-22 has been adopted.
The death-rates for 1921-30 in the age-groups used for calculating the life-table
are shown in the following table, which also shows for the purposes of comparison
the corresponding death-rates for the period 1841-50 :—
London
life-tables.