Urinary incontinence in spina bifida: Initial instrument validation.

Hubert KC, Sideridis G, Sherlock R, Rosoklija I, Kringle G, Johnson K, Bauer SB, Nelson CP.

(2015)  Urinary incontinence in spina bifida: Initial instrument validation.  Res Dev Disabil. 2015 May;40:42-50. doi: 10.1016/j.ridd.2015.01.008.

Abstract

The purpose of this study was to perform a psychometric assessment of the Incontinence Symptom Index-Pediatric (ISI-P) in a cohort of adolescents with spina bifida (SB) and neuropathic urinary incontinence (UI) to test its validity and reliability. The ISI-P, an 11-item instrument with domains for symptom severity and impairment, was self-administered by subjects 11-17 years old with SB and UI. Controls were 11-17 years old, with nephrolithiasis and no history of UI. Formal psychometric assessment included an evaluation of internal consistency, test re-test reliability and factor analysis. Of 78 study-eligible subjects we attempted to contact, 33 (66.7% female) with a median age of 13.1 years completed the ISI-P (42.3% response rate). 21 control patients also completed the ISI-P. Cronbach's alpha was 0.936 and 0.792 for the severity and bother factors respectively. The delta Chi-square test for the two-factor (vs. one-factor) model was significantly [χ(2)(89)=107.823, p<0 .05="" adolescents="" all="" analysis="" and="" associated="" being="" categories="" category="" comparative="" conclusion="" contributed="" descriptive="" desirable="" different="" e.g.="" each="" excellent="" favor="" fit="" for="" former="" furthermore="" has="" impairment="" in="" index="0.969)." indices="" information="" isi-p="" latent="" measurement="" model="" namely="" of="" p="" properties="" psychometric="" sb.="" severity="" showed="" symptom="" that="" the="" threshold="" trait.="" ui="" unique="" values="" were="" with="">Copyright © 2015 Elsevier Ltd. All rights reserved.