A preliminary investigation on the traumatic accidents of farmers engaged in mechanized agricultural work was carried out from the viewpoint of epidemiology. The incidence of traumatic accidents was higher in the group of machine operators than of non-operators, the male group than the female group, and the middle-age group and the group with over 4 years' career. It was found from the cohort study that for the recent several years the male operators have been constantly in the traumatizing risk, but in the case of female oprators the traumatizing risk is increasing in the recent few years. Traumatic accidents occured frequently during the busiest farming season and during 10-11 o'clock in the morning and3-5 o'clock in the afternoon.In the subjective symptoms a marked sign of fatigue From these facts, the high incidence of traumatic accidents might be attributed to the great strain of mechanized agricultural work. was found. Authors keenly feel the necessity of ergonomic case-study on each traumatic accident.
The author made a check of the past five years' itinerary medical service to the islands scattered in the Inland Sea of Japan. All-inclusive, 15, 599 persons received such medical service, including more feinales than males. The diseases found inhigh frequencies were hypertension, neuralgia and diseases of digestive organs, as is also the case with the main land. The diseases found in higher frequencies than expected were anemia, hypotension and gastroptosis, which would have been caused from the peculiar working conditions handicapped by nature and from undernourishment.
Studies were carried out of hematological properties as well as of blood pressure, blood sugar and erythrocytic Changes, of 73 F.S.cases and 80 non F.S.cases in a farming season with the following results. 1) The percentage of abnormal blood pressure of the 73 F.S.cases was over two folds of that of the 80 non F.S.cases, without sex discrimination. 2) As regards the mean value of blood sugar, blood sugar level in the female group was low. 3) From the red blood cell indices (Wintrobe) anemia was classified as: myelophthic anemia (normochromic normocytic) of males;chromic simple anemia due to infection hypoendocrinism (hypochromic normocytic);anemia due to infection or deficiency of Vitamin B6 (normochromic microcytic); and irondeficiency anemia or sideroachrestic anemia (microcytic hypochromic) of females.
Health survey of peasants and fishermen was carried out in 1968 in two districts. The one is T-district which has the character of a farm village, and the other is K-district which has that of a fishing village. Peasants were sampled from both T-district and K-district, and fishermen from K-district. The peasants sampled from T-district are abbreviated as T, and those from K-district as K2, and the fishermen from K-district as K1. 1) Fatigue of the peasants (including both T and K2) is different from that of the fishermen, that is, the character of fatigue in the former is formed chiefly of physical fatigue, while in the latter, it is formed of psychial one. 2) Correlation of scores exists between husband and his wife on the questionaire about No-fu-Syndrome (occupational disease specific to farmers) 3) Correlation of scores exists between husband and his wife an the questionare about fatigue. 4) The mean flicker value of T is higher than that of K1 and K2. 5) Correlation of the frequency of anemia exists between husband and his wife as measured by Hb., serum protein and spg. 6) Working hours of fishermen are generally longer than that of peasants, and sleeping hours of peasants are longer than that of fishermen. 7) The wives of K1 and K2 engagelonger hour in household affairs than those of T. 8) A diagram for the evaluation of health condition was devised to see the difference at a glance. 9) Anequation was devised for the evaluation of fatigue and Nofu-Syndrome, using the scores on the questionaire about fatigue and No-fu-Syndrome, and flicker values.