Air Pollution and Daily Death Number

Part I Death Number Peak and its Screening

Abstract

The pattern of daily change of death number in Osaka City area comparing with that in control area during the period of 1962-1972 was observed. The high level of death number (Excess death) was selected by the deviation from the standard line. The standard line was set by two methods. One is the line showing the seasonal trend by the 15 days moving average and another one is the trend line corresponding to the temperature, which is shown by the regression curve between death number and temperature.
The air pollution effect was distinguished from combined atmospheric effect through the comparison with control area. It was shown that the excess death appeared often in polluted area according to the increase of air pollution level.