title: Assessment of the psychometric properties of the Spanish language version of questionnaire ICIQ-Male Lower Urinary Tract Symptoms (ICIQ-MLUTS).
abstract: OBJECTIVE
  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).
  
  
  METHODS
  This was an observational, non-interventionist and multicenter study. 223 male 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 49 patients that completed the questionnaire again 15 days after initial visit to evaluate test-retest reliability. The questionnaire includes 13 items divided in 2 sub-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.
  
  
  CONCLUSIONS
  The Spanish version of the ICIQ-MLUTS questionnaire shows adequate feasibility, reliability and validity.
authors.affiliation: Servicio de Urología, Hospital Universitario de Canarias, Universidad de La Laguna, San Cristóbal de la Laguna, Tenerife, España. Electronic address: davidcastro@teide.net.
authors.forename: D M
authors.initials: DM
authors.lastname: Castro-Díaz
authors.affiliation: Servicio de Urología, Hospital de Parapléjicos, Toledo, España.
authors.forename: M
authors.initials: M
authors.lastname: Esteban-Fuertes
authors.affiliation: Servicio de Urología, Hospital Clínico San Carlos, Madrid, España.
authors.forename: J
authors.initials: J
authors.lastname: Salinas-Casado
authors.affiliation: Servicio de Urología, Hospital Universitario Puerta del Hierro, Madrid, España.
authors.forename: S
authors.initials: S
authors.lastname: Bustamante-Alarma
authors.affiliation: Servicio de Urología, Hospital Germans Trias i Pujol, Badalona, Barcelona, España.
authors.forename: J L
authors.initials: JL
authors.lastname: Gago-Ramos
authors.affiliation: Unidad de Gestión Clínica de Urología, Hospital Virgen de la Victoria, Málaga, España.
authors.forename: A
authors.initials: A
authors.lastname: Galacho-Bech
authors.affiliation: Servicio de Urología, Hospital Universitario La Paz, Madrid, España.
authors.forename: M J
authors.initials: MJ
authors.lastname: García-Matres
authors.affiliation: Servicio de Urología, Hospital Río Hortega, Valladolid, España.
authors.forename: L A
authors.initials: LA
authors.lastname: Rodríguez-Toves
authors.affiliation: Servicio de Urología, Hospital de Basurto, Bilbao, España.
authors.forename: C
authors.initials: C
authors.lastname: Zubiaur-Líbano
authors.affiliation: Servicio de Urología, Instituto Valenciano de Oncología (IVO), Valencia, España.
authors.forename: A
authors.initials: A
authors.lastname: Collado-Serra
authors.affiliation: Servicio de Urología, Centro Médico Teknon, Barcelona, España.
authors.forename: J E
authors.initials: JE
authors.lastname: Batista-Miranda
authors.affiliation: Servicio de Urología, Hospital Virgen de la Macarena, Sevilla, España.
authors.forename: A
authors.initials: A
authors.lastname: Ortiz-Gámiz
mesh_terms: D006801:Humans; D007802:Language; D059411:Lower Urinary Tract Symptoms / Q000175:diagnosis*; D008297:Male; D008875:Middle Aged; D011594:Psychometrics; D015203:Reproducibility of Results; D011795:Surveys and Questionnaires
keywords: Calidad de vida; Cuestionarios autocompletados; Lower urinary tract symptoms; Quality of life; Self-assessment questionnaire; Síntomas del tracto urinario inferior