動揺病の発症因子に関する臨床的研究 ： アンケート調査による発症因子の統計的検討

Abstract

Questionnaires were sent to 8,570 students of elementary school, junior high school, senior high school and college. The questionnaires included questions concerning background factors (familial environmental, living environmental, living habitual and constitutional) and direct factors (accelative, chemical, physical, personal, visual and mental). The responders were divided into three groups : frequent motion sickness, occasional and never any motion sickness. The results were as follows : 1. In total cases, frequent motion sickness group were 1022 out of 8570 students (11.9%). Primary and junior high school students were 530 out of 6865 students (7.7%), high school students 457 out of 1581 (28.9%) and same cases in college students 35 out of 124 students (28.2%). On sex difference in incidence of frequent cases, a slight female predominance was in students of primary and junior high school, but no difference was observed in college students. 2. Among primary, junior and senior high school students, the group with frequent motion sickness had significantly background and direct factors more than the groups with little or no motion sickness. But in college students, the group with frequent motion sickness, occasional and never any motion sickness had no significantly background and direct factors. 3. The frequent motion sickness group of primary, junior and high school students had more background factors than that of the college students. As for direct factors, it did not shown any difference from the same group of the college students. 4. The factors causing motion sickness consisted mainly of background factors in primary and junior high school students, while they consisted mainly of direct factors in senior high school and college students.