Report on back-to-back houses : a report on relative mortality in through and back-to-back houses in certain towns in the West Riding of Yorkshire / by L.W. Darra Mair ; with an introduction by the medical officer of the board.

  • Mair, L.W. Darra (Ludovic William Darra), 1866-1912.
Date:
1910
Catalogue details

Licence: In copyright

Credit: Report on back-to-back houses : a report on relative mortality in through and back-to-back houses in certain towns in the West Riding of Yorkshire / by L.W. Darra Mair ; with an introduction by the medical officer of the board. Source: Wellcome Collection.

Provider: This material has been provided by London School of Hygiene & Tropical Medicine Library & Archives Service. The original may be consulted at London School of Hygiene & Tropical Medicine Library & Archives Service.

    21/55 (page 16)
    in the through houses, collectively, of all the selected areas, is in- creased to 16 15 per 1,000, while that of the population living in all the back-to-back houses is increased to 18'60 per 1,000. Tliere was, therefore, an excess corrected death-rate in the back- to-back houses, collectively, of 15 per cent. The corrected death-rates of the larger areas individually and of the smaller areas collectively are shown in the following table, as well as the comparative mortality figures, the death-rate in the through houses in each instance being given as 1,000. Table B, — Mean annual death-rates from all causes, corrected for differences in sex and age constitution. Areas in Death-rate per 1,000, corrected for differences in sex and age constitution. Comparative mortality, the death-rate in through houses being 1,000 in each case. Through houses. Back-to-back houses. Through houses. Back-to-back houses. Leeds 20*12 23*45 1,000 1,166 Morley 13*80 14 02 1,000 1,016 Batley 13*05 19*36 1,000 1,484 Bradford 17*81 19-66 1,000 1,104 Huddersfield 16*20 17*52 1,000 1,081 Halifax 17‘49 17*16* 1,000 981- Keighley 16*05 1812 1,000 1,129 Other areas 11*74 15*78 1,000 1,344 All areas 16*15 18.60 1,000 1,152 It will thus be observed that with the exception of the area in Halifax, in which the two sets of rates were nearly identical, there was an excess death-rate in the back-to-back houses in each of the areas chosen for comparison. In the case of Morley the excess was less than 2 per cent., but in the other areas it ranged from 8 per cent, to 48 per cent. It must be borne in mind, however, that with the exception of the area in Leeds, none of the areas is large enough for reliable individual comparison. In the case of Leeds the popula- tions of the through and back-to-back houses numbered about 2,000 each, but in each of the remaining areas the popu- lation was less than 1,000 in either the through houses or in the back-to-back houses, or in both, and there is consequently scope for considerable range of accidental variations in all these cases. The extension of the statistics over so long a period as ten years has, however, the same effect as if each population had been multiplied by ten, and the practically uniform indication of the individual statistical results obtained adds greatly, there- fore, to their significance when taken in the aggregate. ® Exclusive of two deaths referred to in footnote on page 15. Including these two deaths the corrected death-rate is 17*49.