A valid form of the PISQ-12, the PISQ-9, for use in comparative studies of women with and without pelvic organ prolapse and/or urinary incontinence

Objectives: To test the validity and reliability of a modified short-form Pelvic Organ Prolapse/Urinary Incontinence Sexual Questionnaire (PISQ-9) in a general female population. Methods: A cross-sectional survey of 364 sexually active women attending annual gatherings in 2005-06 was conducted. Validated questionnaires were completed, including PISQ-12, Index of Female Sexual Function (IFSF), Pelvic Floor Distress Inventory-20 (PFDI-20), Beck Depression Inventory Second Edition (BDI-II) and Pelvic Pain Urgency/Frequency (PUF) scale. PISQ-12/PISQ-9 scores, for construct validity, were compared with the validated questionnaires, and reliability was assessed with Cronbach's alpha statistic. Results: PISQ-12/PISQ-9 scores correlated significantly with IFSF scores (Spearman-coefficient, 0.65 and 0.66, respectively, P < 0.0001). Mean PISQ-12/PISQ-9 scores in asymptomatic women were significantly better than those in symptomatic women (PISQ-12: 40.0 ± 4.3 versus 37.1 ± 5.2, P < 0.0001; effect size = 0.65, PISQ-9: 28.1 ± 4.1 versus 25.8 ± 4.8, P < 0.0001, effect size = 0.56). PISQ-12/PISQ-9 scores were worse in women with depressive/bladder-pain symptoms compared with those women without these symptoms. Cronbach's alpha values were 0.73 and 0.72 for PISQ-12 and PISQ-9 scores, respectively. Conclusions: PISQ-9 scores strongly correlate with PISQ-12 scores as well as scores of a general sexual-function questionnaire and Cronbach's alpha statistics are acceptable. The PISQ-9 can be reliably used in comparative studies assessing pelvic floor function in women with and without prolapse or incontinence.