Adaptation and Validation of the Clinical Assessment Inventory for Eating Disorders (CIA)
Condition: Eating Disorders
MeSH terms: Feeding and Eating Disorders
Study type: Observational

Summary: 
      The Clinical Impairment Assessment (CIA) assesses psychosocial impairment secondary to an
      eating disorder. The aim of this study was to create and validate a Spanish-language version
      of the CIA. Using a forward-backward translation methodology, we translated the CIA into
      Spanish and evaluated its psychometric characteristics in a clinical sample of 178 ED
      patients. Cronbach's alpha values, confirmatory factor analysis (CFA), and correlations
      between the CIA and the Eating Attitudes Test-12 and the Health-Related Quality of Life in
      ED-short form questionnaires evaluated the reliability, construct validity, and convergent
      validity, respectively. Known-groups validity was also studied comparing the CIA according to
      different groups; responsiveness was assessed by means of effect sizes.
    


Intervention name(s): Adaptation of the CIA
Intervention type(s): Other
Intervention description(s): Adaptation of the CIA into Spanish was performed using the backward-forward translation process, which ensures conceptual. Forward translation into Spanish was carried out by two independent native Spanish speaking translators who were fluent in English. Two other independent translators, totally blind to the original version, whose native language was English and who were fluent in Spanish, back-translated the consensus version into English. After reaching consensus on a final translated version, it was sent to the CIA's original author (Dr. Bohn) who gave her approval. We undertook a cognitive debriefing process with a group of 5 ED patients to identify any problems with language. The pre-final version was administered to two small groups, one made up of patients (a sample of 5 respondents) and the other of clinical experts (2 psychiatrists and 2 psychologists who were experts on ED).
Observational model: Cohort
Time perspective: Prospective
Sampling method: Probability Sample
Study population: 
        We conducted a prospective study of all patients diagnosed with and treated for an ED in
        the Eating Disorders Outpatient Clinic of the Psychiatric Services at the Galdakao-Usansolo
        Hospital, in Bizkaia, Spain. This institution, which serves a population of 300,000
        inhabitants, is part of the Basque Health Care Service, which provides free, unrestricted
        care to nearly 100% of the population. The diagnosis was verified via chart review.
        Throughout the 2-year study period, each patient received a psychopharmacologic and
        psychotherapeutic treatment program consisting of cognitive-behavioural treatment;
        nutritional orientation and counselling; psycho-education; motivational therapy; social
        skills training; and therapy to modify distorted perception of body image.

        Sample size was calculated according to the recommended 10:1 ratio of the number of
        subjects to the number of test items (Kline, 1998). The study was approved by the
        institutional review board of Galdakao-Usansolo Hospital.