Iranian Version of 4AT, an Instrument for Rapid Delirium Screening for Later Life

Background: About 14–56 per cent of hospitalized older adults were affected by cognitive impairment. Objective: To identify the psychometric properties of the 4AT screening instrument for delirium. Design: prospective and cross-sectional study with the 4AT and reference standard DSM-5. Participants: About 164 hospitalized men (age range=65-93, mean age=69.3±1.47) were sampled with the cluster-ratio sampling method. Setting: The eight daily caring centers in Ahwaz city in southwestern Iran in the mid-2015. Measurements: After replying to the 4AT, DSM-5 criteria (2013) was acquired as reference standard diagnosis during 45 minutes by another psychiatrics who were blind to the scores. Results: The coefficients of Cronbach‟s alpha (α=.89), convergent (.85), divergent (-.05), and criterion validity (.91) were estimated (ρ<.01). The exploratory factor analysis demonstrated that the 4AT are organized into one factor, which clarify 97 per cent of the scale‟s variance. Second-order confirmatory factor analysis pointed out that the factor are well matched up onto a principal factor. Consequently, the 1-factor model was well appropriate for the data by the fit index techniques for adjusting the scale as well as areas under the ROC curve=.93 (AGFI=.96, TLI=.94, GFI=.92, RMSEA=.003, IFI=.91, NFI=.95, CFI=.92). Conclusions: The results indicated that the 4AT is well-adjusted and its usefulness for the relevant studies as well.

کلیدواژه ها:

Validity & Reliability ، 4AT ، Delirium ، Later Life ، Iranian Version