最近24年間に於ける我教室の癩の統計的觀察

Abstract

The results of our statistical investigations on lepers, who visited the dermato-urologic clinic of the Osaka Imperial University in the past twenty-four years from 1909 to 1932, were as follows:1). The total number of out patients in the past 24 years was 104350, of which 2665 (2.55%) were lepers. As regards the sex, 2039 patients were male and 626 were female.2). Number and percentage of lepers in every one year: From 1909 to 1924, the number in every one year approximatcd 100, but in 1925 it suddenly went up to 154, showing thereafter a small variation in every years. As for percentage, in 1923 there was seen the minimal percentage (1.66%), and in 1912 the maximal propotion (4.57), others pending 2 and 4 per cent.From the above mentioned statistic, leprous out-patients in our clinic had no remarkable tendency to decrease in number, showing only a small variation.3). The age of patients when they first visited the clinic: Patients in 21-30 years of age were largest in number (34.71%), then those 31-40 years old (20.99%), in 11-20 years old (19.06%), and followed by 51-50 years old (11.67%).4). The age of a provable onset of the disease: In the puverty the onset of the disease was seen most frequently, namely, 21-30 years old (34.52%), 12-20 years old (23.45%), ane 31-40 years old (18.35%).5). Clinical types: L. maculosa 1607 (60.30%), L. nervorum 692 (25.98%), L, tuberosum 177 (6.650), L. mixta 172 (6.45%), L. mutilans (0.49%), unknown 5(0.19%).6). Localisation of leprous changes: The frequency of appearance of changes on different parts were as follows; upper extremity (30.35%), face (25.59%), lower extremity (25.34%), dorsum, breast and belly (8.76%), neck (5.31%), nates (2.45%), head (2.23%).7). First leprous change was said to be found in the following parts; upper extremity (33.94%), lower extremity (27.09), face (27.24%), dorsum, breast and belly (6.67%), neck (2.22%), head (2.07%), nates (1.51%).8). Incipient symptom noticed by patient themselves or by others: Anaesthesia and Hypaesthesia were found in nearly one half or all cases as an incipient symptom. Macula also appeared in a high rate, but other symptoms in a far less percentage.9). The number of patients who visited the clinic in the following four seasons: The disease was seen in the largest number in spring (35.93%), then in summer (25.62%), in winter (19.83%) and finally in autumn (18.62%).10). The distribution of the cases of lepers. More than a half of the cases who visited our clinic lived in the vicinity of Osaka. This fact seemed to depend upon the convenient site of the clinic for the visit of the patients.11). Occupation of patients: Farmers (32.69%), tradesmen (21.33%), workers (21.35%), without difinite occupations (11.81%), etc.In the statistics one third of the lepers were found in farmers. As in Japan, however, more than one half of the population were engaged in agriculture, so the opinion that farmers might be specially exposed to the danger of leprous infection, should not be correct.12). According to the blood relation, fathers or mothers were said to be leprous in 13 cases of the patients, grandparents and uncles or aunts in 9, and brothers or sisters in 7