Abstract
BackgroundThe Florida Obsessive-Compulsive Inventory (FOCI) is a self-reported measure to assess the symptoms and severity of obsessive-compulsive disorder (OCD), which can be completed in five minutes. Although preliminary studies have shown its good psychometric properties, the study of receiver operating characteristics (ROC) to use it as a screening tool has never been reported elsewhere. This study aimed to use the ROC analysis to determine the optimal cut-off score of the Thai version of the FOCI (FOCI-T).MethodsA total of 197 participants completed the FOCI-T, the Patient Health Questionnaire (PHQ-9), and the Pictorial Thai Quality of Life (PTQL), and they were also interviewed with the Mini International Neuropsychiatric Interview (MINI) for their diagnosis. The ROC analyses of the FOCI-T Severity Scores were computed to determine the best cut-off score.ResultsWhen the Thai version of the MINI was used in the interview, it was found that 38 participants were diagnosed with OCD, 43 participants were non-OCD, and 116 participants were healthy adults. The ROC analyses indicated that the FOCI-T Severity Scale could significantly distinguish OCD patients from non-OCD patients and healthy adults. The area under curve was estimated to be 0.945 (95%CI = 0.903-0.972). A cut-off score of ≥5 provided the best sensitivity (0.92) and specificity (0.82).ConclusionThe Thai version of the Florida Obsessive-Compulsive Inventory has demonstrated its good predictive abilities, so it could be used as a brief screening tool to detect obsessive-compulsive disorder patients with high sensitivity and specificity.
Highlights
The Florida Obsessive-Compulsive Inventory (FOCI) is a self-reported measure to assess the symptoms and severity of obsessive-compulsive disorder (OCD), which can be completed in five minutes
Our results indicated that the cut-off score of ≥5 of the Florida Obsessive-Compulsive Inventory (FOCI-T) Severity Scale could distinguish OCD patients from both a mixed group of non-OCD patients and healthy adults and a group of healthy adults with the optimal sensitivity and specificity
The receiver operating characteristics (ROC) analyses were performed to distinguish the OCD patients from both groups so that the FOCI-T can be subsequently used in various settings of the Thai community, which may comprise only healthy people or a mixture between healthy people and people with other psychiatric disorders
Summary
The Florida Obsessive-Compulsive Inventory (FOCI) is a self-reported measure to assess the symptoms and severity of obsessive-compulsive disorder (OCD), which can be completed in five minutes. Obsessive-compulsive disorder (OCD) is a debilitating disorder It is characterized by the presence of recurrent, intrusive, and unwanted thoughts, impulses, or images which the patients attempt to eliminate, suppress, or neutralize with some other thoughts or actions which at last become repetitive ritualistic behaviors (e.g., hand or body washing, checking things, praying, counting, etc.). These symptoms often persist and increase over time, causing significant impairment in socialization, occupation, and other important areas of functioning including quality of life [1, 2]. The screening tools for OCD would be helpful in identifying OCD patients in the community, which, in turn, would benefit both patients and doctors
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