Findings at a Re-Examination of a Self-Administered Questionnaire after Two and a Half Years in a Sample of Sixty-Year-Old Men

Abstract

The result of examinations conducted by self-administered questionnaire on two occasions almost three years apart in the same sample of men in their sixties is related. An overall consistency of 87% was found, but the proportion of changed answers differed form 7 to 26% among the nine sections of the questionnaire, the highest rate of change occurring in the section on physical habits. Most changes could be anticipated among men in their seventh decade, the rise in knowledge about cardiovascular diseases among relatives being an exception.