Meteorology and Mortality in Rural Bangladesh
Lindeboom, W., Alam, N., Begum, D. and Streatfield, P.K. 2012. The association of meteorological factors and mortality in rural Bangladesh, 1983-2009. Global Health Action 5: 61-73.
First of all, the four researchers report that "mortality in the Matlab surveillance area shows overall weak associations with rainfall, and stronger negative association with temperature." Concentrating on the more important temperature, therefore, they highlight the fact that they determined there was "a 1.4% increase in mortality with every 1°C decrease in mean temperature at temperatures below 29.2°C," but that there was only "a 0.2% increase in mortality with every 1°C increase in mean temperature." In addition, they indicate that the "elderly, aged 60 years and above, seem to be most affected at lower temperatures, with a 5.4% increase in mortality with every 1°C decrease in temperature below 23°C."
Lindeboom et al. further report that the Bangladesh Meteorological Department data on both minimum and maximum temperatures observed in 1950-2010 "showed an increasing trend," but they note that the increase was faster for minimum temperature, as opposed to maximum temperature. And thus it can be appreciated that the net effect of that half-century of warming had to have had the positive effect of a net decrease in mortality in Matlab, Bangladesh.