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18
Four graphs are given, (i) the death rates from pulmonary tuberculosis,
(ii) the infant mortality rates (deaths of infants under one year of age
per thousand livebirths), (iii) the neonatal death rates (deaths of infants
under one month of age), and (iv) the stillbirth rates per thousand live
and stillbirths). The horizontal reading of the graphs covers the years
1939 to 1952; the vertical reading is in percentages. If the rates for
Lewisham were the same as for London and for England and Wales
the graphs would indicate a straight line along the hundred mark,
i.e. Lewisham would be 100 percent of the London rate and of the
England and Wales rate. The amount the actual line falls below the
hundred mark in the graph is therefore in favour of Lewisham ; for
example, if the England and Wales line is at 60 this would mean that
the Lewisham rate is only 60 percent or three-fifths of the England and
Wales rate ; if, on the other hand, the line is above the hundred mark
it indicates that Lewisham is relatively badly placed to England and
Wales, or London as the case may be.
It will be seen from graph (i) that a remarkable change has taken
place over the last 14 years in the death rate from pulmonary tuberculosis