愛知県における悪性新生物の疫学的研究

第1報 愛知県における悪性新生物死亡

抄録

From the analysis of the trend of mortality by malingnant neoplasms since 1900, and. from the survey of 14, 800 persons died by malignant neoplasms for 5 years, i. e., from. 1955, the following conclusions were abtained.
1. The death rate by malignant neoplasms is steadily rising after the second world war, and this rise is crisp, when compared with general death rate. This trend is. more remakable in Aichi Prefecture than in all Japan.
2. The mortality by malignant neoplasms of respiratory organs of males went up, remarkably, and the mortality by malignant neoplasms of uteri was declining.
3. The regional accumulation of malignant neoplasms seems to by paralel with. that of stomachs. The high rate regions are observed amass in the alluviums of Kiso and Yahagi river basins, while in the Toyokawa river basin the low regions assembles.
4. The curve of death rate of malignant neoplasms, showed in age-classes of males and that of females cross in the age-class. of 20-25 years, and 50-55 years.
5. The frequent occurrence of deaths by malignant neoplasms of stomach was to be noted.
6. Generally speaking, the life durations of the operateds from the beginning of the disease to death were longer the those of not-operated. Such elongation was not observed in the. cases of the operations of breasts.
7. The number of deaths in hospitals were notable in the cases of young patients, . while it diminishes following the rise of ages of patients.
8. Generally speaking, the life durations from the operation to death are very short.
From the survey of 5, 991 patients of malignant neoplasm who visited the clinics and. hospitals in Aichi Prefecture, the following conclusions were abtained.