Abstract
Objectives: To elucidate the relation among the sexual functions of men in a health screening. Of the 858 men who underwent general health screening tests at the Center for Multiphasic Health Testing and Services between April and July in 2000,596 subjects completed the questionnaires. The questionnaire for sexual function with 11 questions was developed based on the Sapporo Medical University sexual function questionnaire. Factor analysis performed with SAS version 8.02. Factor analysis revealed that 11 questions could be clearly separated into 5 components with total variances of 80.3%, respectively. The five components cover erectile function, sexual drive, overall sex life, treatment for erectile dysfunction, and morning erection. An initial set of questions was refined and reduced through this study. We selected a brief inventory to measure male sexual function in a health screening. Further research is required to make a brief inventory to measure male sexual function in a health screening and to evaluate the validity of the questionnaires.