Abstract
Ten hundred and seventy five deaths from cerebral hemorrhage and 527 from infarction in Nagoya, 1965 were analysed to identify the effects of the combinations and the variations of gradient of meteorologic factors. The excess deaths from cerebral hemorrhage or infarction were found with decrease of air temperature and decrease or minor change of relative humidity; with minor change of temperature and increase or decrease of humidity; with de-crease of atmospheric pressure irrespective of temperature and humidity changes; with increase of pressure and temperature and decrease of humidity; and with increase of positive temperature or humidity gradient. The adequate controls of microclimatic conditions and some special clinical cares for the diseased under unfavarable meteorologic conditions were emphasized for preventing some of deaths from cerebrovascular disease.