Validity and reliability of the Indonesian version of the International Index of Erectile Function

Abstract

Objective: This study aimed to evaluate the validity and reliability of the Indonesian-translated version of the International Index of Erectile Function (IIEF-15). Subjects and methods: A total of 100 male participants were involved in this study. Written consent was given by each participant before filling in the questionnaire. The original main structure and domains were kept in the translated version. Pearson product–moment correlation was used to test the validity of the results. The reliability was determined based on the Cronbach’s alpha internal consistency measurement and intraclass correlation coefficient. Results: The Pearson correlation findings indicate an excellent level of validity compared to the critical value table ( r>0.254, p<0.01). Almost every domain shows excellent internal consistency (α>0.9) and good reliability (0.75<α<0.90) except for sexual desire (α=0.631, r=0.461) and overall satisfaction (α=0.705, r=0.545), which show lower but acceptable consistency as well as moderate reliability, respectively. Overall, the questionnaire exhibits promising consistency (α=0.974) and reliability ( r=0.712). Conclusion: The Indonesian version of the IIEF-15 is valid and reliable to be used as both a clinical diagnostic tool and an instrument for further studies focusing on male sexual dysfunction in Indonesia. Level of evidence: Not applicable