Cross-cultural adaptation of the international consultation incontinence questionnaire male lower urinary tract symptoms-long form (ICIQ-MLUTS-LF) in Persian.

AIMS: The purpose of this study was to translate male lower urinary tract symptoms long form (MLUTS-LF) questionnaire and determine its psychometric properties in Persian speaking subjects.

INTRODUCTION: Assessment instrument is essential for research, making diagnosis, and for evaluating the treatment outcomes in subjects with lower urinary tract disorders of either gender. Long form of MLUTS questionnaire is a robust self-report questionnaire that investigates the major aspects of lower urinary tract symptoms and their impact on quality of life.

METHODS: After getting permission from the International Consultation International Questionnaire website, the forward and backward translation MLUTS carried out by researcher team and assess content/face/construct validity, reliability in sample of MLUTS Iranian patients and, quality rating and pilot testing.

RESULTS: The irritating and obstructing lower urinary disorders were categorized as mild, moderate, and severe in the study sample. Twenty two subjects were suffering from urinary incontinence and most of the participants had benign prostate hyperplasia (BPH). Cronbach's alpha coefficient was 0.819. Correlations between the MLUTS and International prostate symptom score (IPSS) was 0.753.

DISCUSSION: The MLUTS Questionnaire showed good internal consistency, content validity, and construct validity, as measured by correlation with scores on the IPSS.

CONCLUSION: The Iranian version of the MLUTS questionnaire is a valid and robust instrument that can be used in clinical settings and in research.