The use of death-rates as a measure of hygienic conditions / by John Brownlee.

  • John Brownlee
Date:
1922
Catalogue details

Licence: Public Domain Mark

Credit: The use of death-rates as a measure of hygienic conditions / by John Brownlee. Source: Wellcome Collection.

    6/82 (page 4)
    PART I No. of Table. Title of Table. Page I. Illustrating the proportionate distribution of the population in each age and sex group ......... 8 II. Showing a comparison between the health of clergymen and railway- men, 1900-02 ......... 9 III. Illustrating the method of standardizing death-rates by (a) the direct, (b) the indirect method. The example chosen refers to the registration district of Liverpool, 1891-1900, and to nine rural registration districts of Yorkshire, 1891-1900 . . . 11, 12 IV. The comparison of results of standardization by direct and indirect methods . . . . . . . . . . .13 V. Showing the districts and dates of the life tables used in the discussion with symbols of reference and with the standardized and life table death-rates in each district for comparison . . . . .15 VL Table of mortality derived from the English life table, showing of what diseases and at what ages 1,000,000 liveborn children may be expected to die ......... 18 VII. Showing the relative mortality, 1861-70, at each of the twelve ages in eight groups of districts of England and Wales, the deaths at each age in 53 healthy districts being represented by 100 . . 20 VIII. Showing the relative mortality among males and females at different ages in various life tables, the deaths at each age in the rural districts being represented by 100 ...... 22 IX. Showing the relations of death-rates at different ages in different districts to those in the healthy districts of England, 1891-1900 . 24 X. Showing the mortality per thousand living births of children during the first twelve months of life in the urban and rural registration counties from the diseases which chiefly affect the first few months of life, 1906-10 ......... 26 XI. Showing the death-rates per thousand living births among infants during the first twelve months of life in the urban and rural regis¬ tration counties from the diseases which are due to infection, 1906-10 . 29, 30 XII. Giving the values of the constants required for obtaining the life table death-rates or the expectations of life from the standardized death-rates at each age and upwards, the standardized death- rates being calculated from the population given in the table . 31 XIII. Showing the comparison of the actual and theoretical life table death-rates obtained from the life tables and from the short method described in the text ........ 32 XIV. Equations between the life table death-rates (D2) and the stan¬ dardized death-rates (D) . . . . . . . .34 XV. Giving the standard error of the life table death-rates calculated upon different populations as described in the text . . . -. 36 XVI, Giving the constants required to calculate the life table death-rates from the number of deaths obtained by applying the death-rates at each age period to a standard population adjusted so as to be in arithmetical progression . . . . . . .37 XVII. Showing the figures relating to density and death-rate, 1861-70 . 41 XVIII. Showing the figures relating to density and death-rate, 1891-1900 . 41 XIX. Showing the values of w, c, and log a obtained when fitting the expectations at 15, 45, and 75 to the formula a(c — x)~n 43