最近における我が国の子宮癌死亡率の都道府県格差に関係する要因

抄録

In order to investigate the cause of difference in the latest death rate for uterine cancer by prefecture in Japan, relationships between the standardized mortality ratio of uterine cancer in 1979-'81 (SMR) and 23 indices in 1950-'70 and 6 indices in 1980 were studied by correlations, trends and factor analyses (varimax method), and the following results were obtained. 1) Correlation coefficients between SMR and 12 indices including the detection-rate of uterine cancer were positive and significant, and those between SMR and 3 indices were negative and significant. These correlations agreed with the relationships between the trend of age-adjusted death rate of uterine cancer and the trends of the indices with exception of persons per house-hold and public baths per population in 1950-'70, divorce rates and dwellings per population in 1965 and 1970, remarriage/marriage ratio in women and incidence rate of gonorrhea in 1970. 2) Among the partial correlation coefficients between SMR and the significant indices whose relationships of trends agreed with the coefficients, those of average temperature (1950, '60) and spontaneous fetal death rate (1960, '65, '70) were positive and significant. 3) Factor analyses were carried out with the indices used in the partial correlations excluding whose coefficients were significant (1955, '65, '70), and marriage-behaviorfactor and cleanness-factor were extracted as the first factor and the second one. Of the partial correlation coefficients, excluded the influence of the indices whose partial correlation coefficients were significant, between the factor scores and SMR, those of the first factor in 1955, '65, '70 were positive and significant, and those of the second factor in 1955, '65 negative and significant. The above results suggest that spontaneous fetal death rate and marriage-behaviorfactor in the past, in addition to prevalence of uterine cancer and temperature, relate positively to the difference in the latest death rate for uterine cancer by prefecture in Japan, and cleanness-factor negatively to this.