title: Psychometric properties of the Albanian version of chewing-function questionnaire CFQ-ALB.
abstract: BACKGROUND
  The new Chewing Function Questionnaire (CFQ) was lately developed in Croatia to measure the chewing ability in prosthodontic patients, as a one-dimensional instrument consisting of 10-items. Therefore, the objective of this study was to develop an Albanian version of the CFQ questionnaire and to test its psychometric properties in a new typical environment among the Kosovo population.
  
  
  METHODS
  The original version of CFQ questionnaire was translated and cross-culturally adapted from the English language into Albanian in accordance with international guidelines. Its validity (construct, convergent and discriminative) and internal consistency (reliability) were tested in 205 participants. Test-retest reliability was evaluated in 61 subjects with natural teeth, and responsiveness was evaluated in 51 prosthodontic patients with treatment needs.
  
  
  RESULTS
  Internal consistency of CFQ-ALB indicated excellent agreement, with Cronbach's alpha values of 0.974 and average inter-item correlation of 0.792. Intraclass correlation coeficinets for test-retest were found without significant differences by 95 % of confidence intervals (p > 0.05). Construct validity was supported by a single factor that accounted for 81.711 % of the variance observed. Convergent validity was supported by the association between self-reported general satisfactions with chewing and CFQ summary scores. Discriminat validity was supported as statistically significant differences were observed between pre-defined groups. Responsiveness was confirmed by the significant difference between baseline summary scores and the after treatment scores; the mean change was 15.57 (SD =2.49) (p < 0.001).
  
  
  CONCLUSIONS
  The obtained results suggest excellent psychometric properties of the CFQ-ALB questionnaire for determining chewing function in the Republic of Kosovo.
authors.affiliation: Department of Prosthodontics, Dental School, Faculty of Medicine, University of Prishtina, Republic of Kosovo, Rrethi i Spitalit p.n., 10000, Prishtina, Republic of Kosovo. vbimbashi@gmail.com.
authors.forename: Venera
authors.initials: V
authors.lastname: Bimbashi
authors.affiliation: Department of Prosthodontics, Dental School, Faculty of Medicine, University of Prishtina and University Dentistry Clinical Center of Kosovo, Prishtina, Republic of Kosovo. gloria.staka@uni-pr.edu.
authors.forename: Gloria
authors.initials: G
authors.lastname: Staka
authors.affiliation: Department of Prosthodontics, School of Dental Medicine, University of Zagreb and Clinical Hospital Centre, Zagreb, Croatia. celebic@sfzg.hr.
authors.forename: Asja
authors.initials: A
authors.lastname: Čelebić
authors.affiliation: Department of Prosthodontics, Dental School, Faculty of Medicine, University of Prishtina and University Dentistry Clinical Center of Kosovo, Prishtina, Republic of Kosovo. drfloraa.hoxha@gmail.com.
authors.forename: Flurije
authors.initials: F
authors.lastname: Hoxha
authors.affiliation: Department of Prosthodontics, Dental School, Faculty of Medicine, University of Prishtina and University Dentistry Clinical Center of Kosovo, Prishtina, Republic of Kosovo. drkujta@yahoo.com.
authors.forename: Kujtim
authors.initials: K
authors.lastname: Shala
authors.affiliation: Department of Prosthodontics, School of Dental Medicine, University of Zagreb, Zagreb, Croatia. petricevic@sfzg.hr.
authors.forename: Nikola
authors.initials: N
authors.lastname: Petričević
mesh_terms: D000328:Adult; D000368:Aged; D000369:Aged, 80 and over; D000415:Albania; D017523:Croatia; D003778:Dentures / Q000523:psychology*; D005260:Female; D006801:Humans; D008297:Male; D008409:Mastication; D008875:Middle Aged; D010549:Personal Satisfaction; D011594:Psychometrics / Q000295:instrumentation*; D011788:Quality of Life / Q000523:psychology*; D015203:Reproducibility of Results; D011795:Surveys and Questionnaires; D014177:Translations; D055815:Young Adult