The purpose of this study was to corroborate the presence of an extended family that consisted of the family members lived with the bedfast and/or housebound elderly (BHE) and adult children, grandchildren, sibling, and other relatives not necessarily lived with BHE in the same household who ensured the provision of basic care, general supervision and nursing for BHE, and to find the characteristic of family relations and the pattern of family care within this extended family in a rural community in Okinawa, Tamagusuku Village. Thirty-eight of all 58 cases of BHE in this community were interviewed continu ously three times to seven from August 1978 to November 1979. The results were as fellows: 1. Twenty-eight of 38 cases, or about 75 per cent were cared within the extended family. 2. The major caretakers for BHE lived near within about 15 minutes on foot and the assistants of them within about 30 minutes by car. 3. The pattern of family care for BHE, leaded by spouse and daughter-in-law lived with BHE in the same household and co-operated by the members of the extended family, was in the majority and the common pattern. 4. The pattern of family care for BHE leaded by daughter was not common, but the pattern of family care for BHE in. this community was not necessarily established by patrilineal-line, especially father-son relationship. 5. The family relations within this extended family were maintained friendly and these were mutually related.
The cancer deaths among agricultural households in Kanto area were characterized in this series of papers from the two standpoints: the age-dependences and geographical distributions of their cancer risk. Our previous paper had investigated the cancers of high or low risk among agricultural households in the whole of Japan and Kanto area, in terms of odds ratios compared with the non-agricultural households (Nakachi, 1983). The age-de pendences of odds ratios had been analyzed there to estimate the periods in ages as to when the causes of ascending or decending risks for those cancers affected the agricultural households. In this paper, we wish to call further attention to the geographical distribution of odds ratios in the small divisions of Kanto area with respect to the cancers of high or low risk which were disclosed in the previous paper. Focusing on the eating habits of the agricultural and non-agricultural people, we next examine the following two assumptions for cancers of the digestive organs and the breast. (1) The high or low risk for the cancers among agricultural households can be ascribable mainly to their particular eating habits. (2) The geographical variation of standardized mortality ratios (SMR) in districts can be explained by the variation of eating habits. When these assumptions are proved to be valid for some of the cancers, it is also necessary to examine a consistency as to whether the risk (or preventive) factors in dietary life are common or different between the agricultural and general people.
To study the cause of difference in death rate from non-car-accident and adverse effect by prefecture in Japan, accidential death rates (ADR) were calculated by subtracting corrected death rates from car accident from those from accident and adverse effect by prefecture in 1980, and relationship between ADR and 33 items of prefectural character, income per capita, consumer price index and livelihood protection rate was studied by correlation and factor analysis, and the following results were obtained. 1) Correlation coefficients between ADR and 23 items in man, and 21 items in woman were significant, and of the partial correlation coefficients, the coefficient between ADR and livelihood protection rate in man was significant. 2) Factor analyses were carried out with the significant items (excluding livelihoc protection rate for man) and 2 factors (F1 and F2) were extracted, and the F1 was es mated to be rural character factor. 3) The correlation coefficients between ADR and the F1-score and the F2-score in man, and the F1-score in woman were significant, and of the partial correlation coefficients excluding the influence of livelihood protection rate in man, the coefficient between ADR and the F1-score was significant. The above results suggest that rural character relates to the causes of difference in ADR by prefecture in Japan for both sexes, and poverty to those for man.