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28
The infantile mortality rate is based upon the number of deaths
under 1 year of age per 1,000 births registered. Taking the 7,016
total registered uncorrected births during 1927 (52 weeks), and the 395
total uncorrected deaths of infants under 1 year of age, the infantile
mortality rate is 56.3, as compared with annual average rates
(uncorrected of 150.5, 123.8 and 97.5 for the decennia 1891-1900
(Parish), 1901-10 (Borough) and 1911-20 (Borough), and an annual
average rate (uncorrected) of 69.8 for the quinquennium 1921-25
(Borough); whereas, if the corrected deaths of infants under 1 year
are used, viz., 266, the infantile mortality rate is 37.9, as compared
with yearly average rates (corrected) of 146.1, 115.3 and 77.2 for
the same decennia, and an average rate (corrected) of 50.5 for the
quinquennium 1921-25 (Borough) respectively.
The chief causes of these deaths under 1 year of age are debility,
atrophy and inanition, congenital malformations, measles, whooping
cough, syphilis, bronchitis and other diseases of the respiratory
organs, diarrhœa and prematurity.
In whatever way the infantile mortality rate is expressed
statistically, it shows a remarkable decline during recent years as
compared with the previous decennia 1911-20, 1901-10 and 18911900,
and the quinquennium 1921-25. The figures for the year
1927 are the lowest ever recorded in the annals of the Borough or
of the Parish.

Inner Districts—56.8, Outer Districts—55.6.
N.B.—For the purposes of calculating infantile mortality rates
in this table, the births and deaths in Stockwell Registration Subdistrict
are divided equally between the Inner and Outer Districts.