小学生の欠席状況の統計的解析

概要

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Presuming that records of absence in primary schools can be used for the evaluation of health state of a school child or a group of school children, records of absence from April 1971 to March 1972 on 3, 021 children in a school in Kyoto city and in two schools in the suburbs of Kyoto city were statistically analyzed. The following results were obtained.The frequency distribution of the number of days of absence of each child during a year was positively skewed on both boys and girls in every grade and in every school. The arithmetic mean or the median of the distribution differed among grades, between boys and girls and among schools. The threshold number of days of absence during a year for the detection of vulnerable children was calculated from every grade.The frequency distribution of absentees on each day fiitted well to the frequencies given by Poisson distribution in every grade and in every school when the observation was limited to the absence due to non-infectious diseases during one term. The upper limit of the normal range of the rate of absentees on one day was calculated for various average rates of absence.Moreover, in order to look for the causes of daily variations of absentees, the difference of average absentees among days of week and the relation between the number of absentees one day and various meteorological conditions were investigated during the winter term.
日本衛生学会の論文