London's Pulse: Medical Officer of Health reports 1848-1972
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Hints from the Health Department. Leaflet from the archive of the Society of Medical Officers of Health. Credit: Wellcome Collection, London
London County Council 1933
[Report of the Medical Officer of Health for London County Council]
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Fig. 4 is a differential analysis of the better ear of the failed children, before and after
treatment. It is a guide to the educational impairment existing, but modification of education
for individual children depends on whether deafness persists after treatment.
Fig. 5 is a differential analysis of all ears before and after treatment.
A study of the graphs shows many interesting points, one of the most important being
the improvement indicated after treatment.