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Movement of Population
There is a continuous substantial movement of population both into and out of the
Borough and since 1949 the outward movement has consistently exceeded the inward with a
consequent steady fall into population.
In 1961, although there was a natural increase in population arising from births
exceeding deaths by 503, the Registrar General's estimate of population shows a
reduction of 1,5 50 meaning that the outward movement of population was greater than
the inward by 2,053.
Classification of Deaths
Deaths are classified under the 36 headings based on the abbreviated list under
International Statistical Classification of Diseases, Injuries and Causes of Death,
1955. Deaths are assigned to the area where the deceased normally resided, except
where the death occurs in a residential home or in a chronic or mental hospital where
the deceased has been a patient for six months or more.
Comparability Factors
To enable local vital statistics to be compared with other districts or with
national figures the Registrar General issues comparability factors for correcting
crude birth and death rates. These factors make allowance for the way in which the
sex and age distribution of the local population differs from that for England and
Wales as a whole. The death rate comparability factor has been adjusted specifically
to take account of the presence of residential institutions in the area.
To compare the crude birth and death rates for Tottenham with the national rates,
Tottenham's figures must first be multiplied by the appropriate comparability factor
1.00 for births and 1.03 for deaths.