[Report 1898] / Medical Officer of Health, Bath City & County Borough.

  • Bath (England). City and County Borough Council.
Date:
1898
Catalogue details

Licence: Attribution-NonCommercial 4.0 International (CC BY-NC 4.0)

Credit: [Report 1898] / Medical Officer of Health, Bath City & County Borough. Source: Wellcome Collection.

    10/52 (page 8)
    The Crude Death-Rate, Corrected Death-Rate, and Comparative Mortality Figure. The Crude Death-rate is circulated in terms of deaths from all causes per 1,000 persons of all ages and is of very little value for the purpose of comparing the sanitary condition of one district with that of another. Crude Death-rate for 1898, 16.3 per 1000 annually. The Corrected Death-rate is more valuable, the proportion of the varioiis age groups to the general population being considered. The Standard Death-rate must first be ascertained. By the Standard Death- rate is meant the Death-rate at all ages, calculated on the hypothesirs that the rates of each of the twelve age periods of each sex were the same as in England and Wales dming the ten years 1881-90, the Death- rate at all ages in England and Wales during that period having been 19.15 per 1000 annually. The Standard Death-rate for Bath is 20.301. It is purely hypothetical. A Death-rate of 20.3 in Bath would have the same significance as one of 19.15 in England and Wales. Having the Standard Death-rate, the figure by which the Crude Death-rate should be multiplied, in order to correct for variations in age and sex, i,s easily found. This “Factor for Correction'' for Bath is 0.9432. Our returns shew that in 1898 there were 856 “deaths from all causes,” but tins emmieration includes 73 deaths among persons who only came to Bath in their last illness for treatment; these should be deducted. At the Statutory Hospital there were two deaths among persons wdio went there from Bath for treatment; these were registered as occm’ring in the Kimal District, and should be added. We thus have a total of 785 deaths among persons usually residing in Bath, equivalent to a Death-rate of 14.9 jDer 1000, which, multiplied by the “Factor” .9432 gives us the Con’ected Death-rate, 14.1 per 1000 an- nually. The Death-rate for 1898 is the lowest recorded. The “Comparative Mortality Figure” represents the Death-rate cor- rected to standard population, but not corrected for non-residents, compared with the recorded Death-rate at all ages in England and Wales taken as 1000. The Comparative Mortality Figure for Bath for 1898 is 874; that is to say, the same number of living persons, of