OBJECTIVES: To evaluate the psychometric properties of the Spanish version of the ICIQ-Male Lower Urinary Tract Symptoms Questionnaire (ICIQ-MLUTS): Feasibility (% of completion and ceiling/ground effects), reliability (Test-retest), convergent validity (vs Bladder Control Self-Assessment Questionnaire [BSAQ] and vs International Prostate Symptom Score [I-PSS]) and criterion validity (according to presence or absence of symptoms).
MATERIAL AND METHODS: This was an observational, non-interventionist and multicenter study. 223male patients with lower urinary tract symptoms (LUTS), predominantly storage symptoms and aged 18-65, took part in the study. Patients completed the ICIQ-MLUTS (test), I-PSS and BSAQ questionnaires and referred their urinary symptoms in a single visit, with the exception of a subgroup composed by 49patients that completed the questionnaire again 15days after initial visit to evaluate test-retest reliability. The questionnaire includes 13items divided in 2sub-scales: Voiding symptoms (V) from 0-20 and Incontinence symptoms (I) from 0-24.
RESULTS: Percentage of patients that completed all items: 98.84%. Ground effect is 0 and ceiling effect was under 6% in both sub-scales. Test-retest reliability: Intraclass correlation coefficient (ICC) ranged from 0.68 to 0.88, except on Delay. Kappa shows a good agreement, between 0.60 and 0.81, except for Nocturia. Convergent validity: Correlation (Spearman) between the questionnaire sub-scales scores and the rest of measures is statistically significant (P< .01 and P< .05). Criterion validity: Statistically significant differences (P< .05) between scores on ICIQ-MLUTS, from patients that refer experiencing symptoms and those who do not.
CONCLUSION: The Spanish version of the ICIQ-MLUTS questionnaire shows adequate feasibility, reliability and validity.
Written by:
Castro-Díaz DM, Esteban-Fuertes M, Salinas-Casado J, Bustamante-Alarma S, Gago-Ramos JL, Galacho-Bech A, García-Matres MJ, Rodríguez-Toves LA, Zubiaur-Líbano C, Collado-Serra A, Batista-Miranda JE, Ortiz-Gámiz A; Grupo Ifu. Are you the author?
Servicio de Urología, Hospital Universitario de Canarias, Universidad de La Laguna, San Cristóbal de la Laguna, Tenerife, España.
Reference: Actas Urol Esp. 2013 Oct 10. pii: S0210-4806(13)00280-5.
doi: 10.1016/j.acuro.2013.07.005
PubMed Abstract
PMID: 24120839
