[Report 1937] / Medical Officer of Health, Bolton County Borough.

  • Bolton (Greater Manchester, England). County Borough Council.
Date:
1937
Catalogue details

Licence: Attribution 4.0 International (CC BY 4.0)

Credit: [Report 1937] / Medical Officer of Health, Bolton County Borough. Source: Wellcome Collection.

    28/164 (page 12)
    Death-Rate of Infants under One Year of Age. The death-rate of infants is e.xpressed as the number of deaths under one year per 1,000 live births and is called the Infantile Mortality-rate. Bolton’s infantile mortality-rate for 1937 was 61. The hgure for England and Wales was 58. Of Bolton’s 2,166 births, 2,097 were legitimate and 69 illegitimate. The infantile mortalitj' amongst the legitimate children was 59, and amongst the illegitimate 115. In the following table is given the average infantile mortality for live year periods from 1876 to 1930, and for each year from 1931 to 1937. t)uin(]uennium Average rate Year Rate 1876-1880 171 1931 78 1881-1885 169 1932 71 1886-1890 173 1933 78 1891-1895 185 1934 53 1896-1900 173 1935 64 1901-1905 157 1936 58 1906-1910 134 1937 61 1911-1915 128 1916-1920 100 1921-1925 91 1926-1930 82 The part of the infantile mortality which occurs in the hrst four weeks of life is called the neo-natal mortality. It is mainly due to causes which have been at work before birth. The following table gives the neo-natal mortality-rate for Bolton since 1905. It will be noted that half the total deaths of infants under one year occur in the first four weeks of life. The causes of premature birth and of death in the first four weeks of life have not been influenced for the better in the last thirty years to the same e.xtent as the causes of death in the later stages of infancy..