1996 Volume 33 Issue 4 Pages 137-145
YAMANAKA S and NAKAMURA Y. Regional differences in the number of patients for circulatory and respiratory diseases and climatical condition. Jpn. J. Biometeor., 33: 137-145, 1996. -First of all, the total numbers of patients for circulatory and respiratory diseases were estimated by using figures provided by the National Patient Survey and the formula being accepted as useful. Then the patient rates for 9 age classes and the age-adjusted patient rate, for 2 diseases in 47 prefectures, and some climatical conditions were analysed with the multiple regression analysis method. The results are as follows : At the significance level of 5% and less, for circulatory diseases, the average temperature was found to be the only one factor which affect the patient rate over the age of 35 and the age-adjusted patient rate, that is, these patient rates turned out to rise with the descending average temperature. The absolute values of the regression coefficients increased with the rising age classes. But these absolute values tended to decrease every survey in 1984, 1987 and 1990 except for the age over 75. For respiratory diseases, any consistent and reliable results through 3 surveys, in 1984, 1987 and 1990 could not be got.
