Abstract
In 1958 the National Society of Female Dentists conducted mass dental examination on Isu Oshima and Hachijo Islands. Utilizing data on the 1, 657 school children of six to fourteen years then examined, this writer tried the following techniques, with considerable success, as most effective and simple means of obtaining basic data for public health administration from community halth examinations: 1) with the reliability set at 95%, accuracy 5% and the percentage of healthy cases 15%, the number of mass-examined cases was determined by the following equation: n n0/1+n0-1/N, n0=t2pq/d2
2) Numbers of cases were assigned on a doublebasis examination program with“area” and “age”taken as factors, and this allowed the mass-examinations to be conducted with ease.
3) After the mass-examinations, the results could be learnt mechanically.
