Premium
Reliability and Validity of the Quality of Life Questionnaire in Iranian Patients with Lower Urinary Tract Symptoms
Author(s) -
POURMOMENY Abbas Ali.,
ZARGHAM Mahtab,
FANI Maedeh
Publication year - 2018
Publication title -
luts: lower urinary tract symptoms
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.451
H-Index - 15
eISSN - 1757-5672
pISSN - 1757-5664
DOI - 10.1111/luts.12147
Subject(s) - cronbach's alpha , lower urinary tract symptoms , quality of life (healthcare) , construct validity , reliability (semiconductor) , content validity , face validity , criterion validity , medicine , internal consistency , validity , clinical psychology , physical therapy , psychology , psychometrics , nursing , prostate , power (physics) , physics , cancer , quantum mechanics
Objectives The aim of this study is to evaluate the psychometric properties of the Iranian version of the Quality of Life ( QoL ) questionnaire in patients with urinary incontinence ( UI ). Methods The English questionnaire on lower urinary tract symptoms was initially translated into Persian, and then back‐translated into English. Final modifications were made after testing the questionnaire on Iranian patients with UI . To validate the translated questionnaire, the following tests were undertaken: content/face validity, internal consistency/reliability and construct validity. Results The Lower Urinary Tract Symptoms Quality of Life ( LUTS–QoL ) questionnaire showed good internal consistency, content validity, and criterion validity, as measured by correlation with scores on the Short‐Form 36 Health Survey ( SF ‐36). Cronbach's alpha coefficient was 0.951, indicating a high internal consistency. Concerning criterion validity, correlations between the LUTS–QoL and subscales of the SF ‐36 were 0.563–0.193. The highest correlation was found between the LUTS–QoL and the social function subscale of the SF ‐36. Conclusion The Iranian version of the LUTS–QoL questionnaire is a valid and robust instrument that can be used reliably in clinical settings and in research.