A brief online transdiagnostic measure: Psychometric properties of the Overall Anxiety Severity and Impairment Scale (OASIS) among Spanish patients with emotional disorders

Abstract

The Overall Anxiety Severity and Impairment Scale (OASIS) is a self-report questionnaire designed to evaluate the severity and functional impairment associated with anxiety. Given its transdiagnostic nature, it can be used indistinctly across anxiety and depressive disorders. In this study, the psychometric properties of the online version of the OASIS were evaluated in a Spanish clinical sample with emotional disorders. Patients (n = 583) with anxiety (n = 250) and depression (n = 333) with a mean age of 37.21 (SD = 12.22), underwent a diagnostic interview and questionnaires assessing anxiety, depression, positive and negative affect, and quality of life. Factorial structure, internal consistency, convergent and discriminant validity, cutoff scores, and sensitivity to change were analyzed. Confirmatory Factor Analysis yielded a unidimensional factor structure, consistent with previous validations of the instrument. The analyses showed good internal consistency and adequate convergent and discriminant validity, as well as sensitivity to change. A cutoff score of 7.5 was found to meet the criteria used in this study to select the optimal cutoff point. Overall, in this study, the psychometric properties of the online version of the OASIS were found to be appropriate. The brevity and ease of use of the OASIS support its adequacy as a valid measure of anxiety severity and impairment in Spanish clinical samples with anxiety and depression.

Positive and Negative Affect Schedule (PANAS): psychometric properties of the online Spanish version in a clinical sample with emotional disorders

“…Cronbach alpha for the scale was .80, and it showed good test-retest reliability (k = 5, .82). The Spanish version of the OASIS has shown good internal consistency (α = .86), and convergent and discriminant validity [49]. Cronbach alpha for the OASIS in the current study was good (.87).…”

Capturing the Severity and Impairment Associated With Depression: The Overall Depression Severity and Impairment Scale (ODSIS) Validation in a Spanish Clinical Sample

“…The procedure in the present study was the same than in the recently published study regarding the Spanish validation of the OASIS (22). Before starting the study, a translation of the scale from English to Spanish was performed using the procedure described in González-Robles et al (22).…”

“…The procedure in the present study was the same than in the recently published study regarding the Spanish validation of the OASIS (22). Before starting the study, a translation of the scale from English to Spanish was performed using the procedure described in González-Robles et al (22). Individuals who were waiting to receive an online psychological treatment at the Emotional Disorders Clinic (Universitat Jaume I) were informed that a research study was being conducted, and they were invited to participate.…”

“…In a previous study published by the current authors, the psychometric properties of the Overall Anxiety Severity and Impairment Scale (OASIS) were analyzed (22). Similarly to the ODSIS, the OASIS is a 5-item scale for the assessment of the severity and impairment associated with anxiety.…”

Efficacy of a self-applied online program to promote resilience and coping skills in university students in four Spanish-speaking countries: study protocol for a randomized controlled trial

“…According to a psychometric analysis, it has good internal consistency (α = .80), test-test reliability (k = .82), and convergent validity. Online adaptation to a Spanish sample shows good internal consistency (α = 0.86), adequate convergent and discriminant validity, and a cut-off score of 7.5 [108,110].…”