What does this research mean for the field?

The Overall Anxiety Severity and Impairment Scale (OASIS) and the Overall Depression Severity and Impairment Scale (ODSIS) are reliable and valid unidimensional instruments for assessing anxiety and depressive symptom severity and functional impairment in an Indian community sample. Novelty: ClaimNovelty.CONFIRMATORY. Consensus alignment: ConsensusAlignment.NEUTRAL.

What question did this study set out to answer?

This study aims to evaluate the psychometric properties of the OASIS and ODSIS in an Indian community sample.

July 12, 2026Annals of Clinical Psychiatry

Psychometric Properties of the Overall Depression Severity and Impairment Scale and the Overall Anxiety Severity and Impairment Scale in an Indian Community Sample

Q: What is the clinical evidence from this study?

Study design: Cross-Sectional. Population: Anxiety and depressive disorders (n=1204). Intervention: Overall Anxiety Severity and Impairment Scale (OASIS) and Overall Depression Severity and Impairment Scale (ODSIS). Primary outcome: Psychometric properties including internal consistency and validity.

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Key result

OASIS and ODSIS scales demonstrate excellent consistency and validity for assessing anxiety and depression.

n=1,204

Why the study?

The psychometric properties and measurement invariance of the OASIS and ODSIS remained unclear in India, where cultural and contextual factors may influence scale performance.

Population

1204 participants aged 18 to 60 years in an Indian community sample

Design

Cross-sectional psychometric study

Authors

MMM MahadevaswamyCentral Institute of Psychiatry SNSneha NathawatGandhi Medical College & Hospital ASArshia SenguptaUniversity of Delhi

Discussion

Member takes

Implication

Supports OASIS/ODSIS validation in India; leaves open need for longitudinal studies before clinical adoption.

Key Points

This study aims to evaluate the psychometric properties of the OASIS and ODSIS in an Indian community sample.
Conducted a cross-sectional psychometric study with 1204 participants aged 18 to 60 years.
Analyzed factor structure, internal consistency, and validity (convergent, divergent, discriminant, predictive) of OASIS and ODSIS.
Measured internal consistency using Cronbach's alpha (α) and omega (ω).
Both scales demonstrated a unidimensional structure with adequate factor loadings.
OASIS showed good internal consistency (α = .902; ω = .904) and ODSIS (α = .899; ω = .899).
Test-retest validity was excellent, with both scales exhibiting good convergent, divergent, discriminant, and predictive validity.

Study Design

Type

Cross-Sectional (n=1,204)

Structured PICO

Population

1,204 participants aged 18 to 60 years (71.6% female) from an Indian community sample assessed for anxiety and depressive symptoms.

Exposure

Overall Anxiety Severity and Impairment Scale (OASIS) and Overall Depression Severity and Impairment Scale (ODSIS)

Outcome

Psychometric properties including unidimensional structure, internal consistency, test-retest validity, and convergent, divergent, discriminant, and predictive validitypatient reported

The OASIS and ODSIS are reliable and valid instruments for assessing the severity and functional impairment of anxiety and depressive symptoms in the Indian population.

Cite This Study

Mahadevaswamy et al. (2026) conducted a cross-sectional in Anxiety and depressive disorders (n=1,204). Overall Anxiety Severity and Impairment Scale (OASIS) and Overall Depression Severity and Impairment Scale (ODSIS) was evaluated on Psychometric properties including internal consistency and validity. The OASIS and ODSIS scales demonstrated good to excellent internal consistency (α = .902 and .899, respectively) and validity for assessing anxiety and depression in an Indian community sample.

synapsesocial.com/papers/6a5332f94f7abc118adedef8 https://doi.org/10.1177/10401237261469105

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Psychometric Properties of the Overall Depression Severity and Impairment Scale and the Overall Anxiety Severity and Impairment Scale in an Indian Community Sample

Discussion

Member takes

Implication

Key Points

Study Design

Structured PICO

Cite This Study

Psychometric Properties of the Overall Depression Severity and Impairment Scale and the Overall Anxiety Severity and Impairment Scale in an Indian Community Sample

Discussion

Member takes

Implication

Key Points

Study Design

Structured PICO

Cite This Study

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