To assess the internal consistency, construct validity and sensitivity to change of a pelvic organ prolapse symptom score (POP-SS).
Analysis of data from three prolapse studies, including symptomatic and asymptomatic women who completed the POP-SS.
(1) A community setting in New Zealand, (2) two gynaecology outpatient departments in Scotland and (3) a gynaecological surgery department in Scotland.
(1) Participants from a survey of postnatal women at 12-year follow up, invited to complete a prolapse questionnaire and have prolapse assessment, (2) new gynaecology outpatients presenting with prolapse symptoms, randomised to pelvic floor muscle training (PFMT) or control and (3) women having anterior and/or posterior prolapse surgery, randomised to mesh insert or no mesh.
Data were analysed to assess internal consistency, construct validity and sensitivity to change of the POP-SS.
Cronbach's alpha, significance of differences in POP-SS scores between studies and significance of difference in POP-SS scores pre- to post-intervention.
For internal consistency, Cronbach's alpha ranged from 0.723 to 0.828. Women having surgery had higher POP-SS scores than those having conservative management (mean difference 5.0, 95% CI 3.1-6.9), who in turn had higher scores than the asymptomatic women (mean difference 5.9, 95% CI 4.4-7.4). Significant differences in POP-SS score were detected after surgery and PFMT. The improvement due to surgery was significantly greater than that associated with PFMT (z = -3.006, P = 0.003).
The POP-SS has good internal consistency and construct validity and is sensitive to change.
|Number of pages||7|
|Journal||BJOG-An International Journal of Obstetrics and Gynaecology|
|Early online date||8 Oct 2008|
|Publication status||Published - Jan 2009|
- construct validity
- internal consistency
- outcome measure
- pelvic organ prolapse
- psychometric properties
- sensitivity to change
- floor dysfunction