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10
1
VITAL STATISTICS
Population
The overall civilian population at the middle of the year was
estimated by the Registrar-General to be 331,660 and all the rates
used in this Report are based on this figure.
Movement of population
It is perhaps not generally realised how the work of the health
department is complicated by the migrant nature of a large proportion
of the population. During 1965 there were over 3,000
families, all with children under five years of age, who moved into
Wandsworth; during the same period over 3,500 similar families
were known to leave the Borough and a further 1,700 to 1,800
families moved away without leaving any trace of their destinations.
Of these last, over 400 were traced either inside or outside
Wandsworth.
Area Comparability Factors
Each year, the Registrar-General provides area comparability
factors relating to births and deaths. These factors take into
account the extent to which the age and sex distribution of the
local population differs from that of England and Wales as a whole
and this enables valid comparisons to be made between the birth
and death rates in Wandsworth and those in other areas.
For the year 1965, the factor for births is 0.96 and for deaths
0.83.