Psychometric properties of the Persian adaptation of quality of sexual function questionnaire

The quality of sexual relationships is one of the essential dimensions of quality of life. Quality of life tools and sexual satisfaction scales are usually quite distinct and do not allow for a comparison between the two genders. The quality of sexual function (QSF) scale measures the quality of sexual relationships and allows for the comparison of women with men. This study aimed to evaluate the reliability and validity of the Persian adaptation of the Quality of Sexual Function Scale. A total of 333 participants were recruited from the clinics of Rasoul Akram Hospital, Tehran, Iran. The scale was translated and adapted by the World Health Organization’s (WHO) recommended method. We found a new construct by exploratory factor analysis. The Cronbach’s alpha was 0.82 and the McDonald’s omega was 0.89. The size of the correlation coefficient between QSF score and age, BMI, and the number of years of married life was trivial. The exploratory factor analysis revealed that the Persian version of QSF consisted of seven dimensions: physical well-being, sexual excitement, mental well-being, expression of sexual wish, desire, satisfaction, being unhappy with sexual life, and sexual dreams. The results of this study revealed that the Persian version of the QSF had appropriate validity and reliability for future studies. The new factorial structure can help to better evaluate the sexual function of patients.