As the result of a survey on anemia in 80 women, leaders of the Agricultural Cooperative of Chiba Prefecture in June 1969, anemia was found in 22.8%. The relationship between anemia and the frequency of pregnancy, anemia and farmer's disease and anemia and nutritio nal intake was studied but no definite correlation was noted. A comparison between fresh and preserved blood as the test material revealed a higher Hematcrit (Ht) in fresh blood. The correlation coefficient between Ht and Specific Gravities of Whole Blood (GB) was 0.898, between Hemoglobin (Hb) and Ht 0.894, and between GB and Ht 0.803.
Through the procedure of principal component analysis, the authors investigated the utilities of five health indicatores; infant death rate, corrected death rate, correted PMI (proportional mortality indicator), Uematsu's health indicator (normal deviate for the mortality) and correc ted life lost in the regions with various scales of population. The results obtained were as follows : 1) In general, infant death rate was representative health indicator in small regions such as city, town or village. On the other hand, Uematsu's indicator was very proficient in the regions with the middle or large populations. 2) As for the structure of those indicators mentioned above, corrected PMI and corrected life lost had very resemble aspects each other, and infant death rate, corrected death rate and Uematsu's indicator showed the highly similar profiles in each region. 3) The value of linear combination in the primary principal component was valid for evaluation of health levels in the middle or large regions.
A study on cardiovascular mortality in Japan and in the United States for the years 1950, 1955 and 19, 60 was previously reported. Present work is a descriptive study of vital records on cardiovascular disease in England & Wales for the years 1951, 1955 and 1961. This study is carried out by calculating the age-sex-adjusted death rates for four selected cardiovascular diseases, such as vascular lesions of the central nervous system, chronic rheumatic heart di sease, arteriosclerotic and degenerative heart disease and other diseases of heart to compare with Japan and the United States. Higher death rate for chronic rheumatic heart disease than Japan and the United States is observed in England & Wales. Death rate for other diseases of heart increases during the ten years of study. Age-specific death rates in the younger age group for all forms studied are lower than Japan and the United States. Cardiovascular mortality of England & Wales bears a close parallel to that of the United States in other general respects.