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15
There are discrepancies between the above table and table 3,
for various reasons as given on page 16 of my annual report for 1950.
For comparative purposes therefore it is safer to group the causes of
death which are linked together. Thus code numbers 10 to 15 may
be regarded as all different kinds of cancer, while numbers 17 to 21
are all diseases of the heart and circulation. Similarly 22 to 25 are best
grouped together.
Certain statistics have therefore been extracted from table 7 and
grouped in this way. They are shown in table 8 which also includes
the percentage of each social class for each disease or group of diseases.
The percentages should be compared with those shown in table 6
for all deaths.

The following table shows the social classification in relation to
registered births, to registered infant deaths, to notified stillbirths and
to notified premature births, an extra line being added to each group
to indicate the percentages. Apart from the registered births the
figures are too small to be significant, but they will build up over the
course of years ; the percentages in the category of registered births
can be compared with those for the registered deaths shown in table 6.