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increase " is entirely or only partially due to radiological diagnosis." In New York,
where in the period between 1931 and 1945 the mortality from cancer of the lung
increased from 7.6 to 20.2 per 100,000 for men and from 3.6 to 5.7 for women, a
greater rise than experienced in London, the authorities consider the rise to be
greater than can be accounted for by mere improvement of diagnosis and sufficiently
extensive to suggest the operation of environmental hazards.*
Road
accidents
Deaths from road accidents are analysed by age in table 6, page 21. The re-issue
of a basic petrol ration during 1945 and the corresponding increase in motor traffic
was reflected in a rise in fatal road accidents, but there was no further advance in 1946.
Infant
mortality
The iniant mortality rate in 1946, 38 per 1,000 live hirtns, constitutes a new low
record, an improvement on the rate of 44 per 1,000 live births in 1945. The movements
of the death-rates from the principal diseases at ages below one year since
1911 are shown in table 9, page 23. The following diagram illustrates the contraction
in the fatality of infants since the years 1911-14:—
* Tuberculosis Reference Year Book—New York, 1945.