Overall Depression and Impairment Scale (ODSIS)

The Overall Depression and Impairment Scale (ODSIS) is a five-item questionnaire that captures the severity and worsening of depressive symptomatology. The questionnaire assesses the most important domains of depression and subsyndromal depressive symptoms, while remaining independent of specific subtypes of mood disorders as defined by DSM-5. The items relate to the frequency of symptoms, their intensity, their interference with work or school and social life. Items ask about experiences in the past week.

Note During administration, it is appropriate to provide respondents with a definition of depression.

Length of filling

Completing the ODSIS takes approximately 3-4 minutes.

Individualized feedback for the respondent

By filling in the scale, the respondent will find out the severity of their depressive symptoms, or their improvement or worsening after repeated filling.

Keywords

Overall Depression Severity and Impairment Scale, ODSIS, depression, depressive disorder, depressive symptoms

Scoring and interpretation

Responses to items are coded from 0 to 4 and can be summed to obtain a total score ranging from 0 to 20. Higher scores indicate greater severity and functional impairment due to depressive symptoms.

Response scale

The answers to the items in this Czech adaptation are shortened compared to the original version so that they correspond more to the typical Likert scale: 0=Never, 1=Rarely, 2=Sometimes, 3=Often and 4=Constantly.

References

Bentley, K. H., Gallagher, M. W., Carl, J. R., & Barlow, D. H. (2014). Development and validation of the Overall Depression Severity and Impairment Scale. Psychological Assessment, 26(3), 815–830. https://doi.org/10.1037/a0036216

Ito M., Bentley K. H., Oe Y., Nakajima S., Fujisato H., Kato N., et al. (2015) Assessing Depression Related Severity and Functional Impairment: The Overall Depression Severity and Impairment Scale (ODSIS). PLoS ONE 10(4): e0122969. https://doi.org/10.1371/journal.pone.0122969

Osma, J., Quilez-Orden, A., Suso-Ribera, C., Peris-Baquero, O., Norman, S. B., Bentley, K. H., & Sauer-Zavala, S. (2019). Psychometric properties and validation of the Spanish versions of the overall anxiety and depression severity and impairment scales. Journal of affective disorders, 252, 9–18. https://doi.org/10.1016/j.jad.2019.03.063

Sandora, J., Novak, L., Brnka, R., van Dijk, J. P., Tavel, P., & Malinakova, K. (2021). The Abbreviated Overall Anxiety Severity and Impairment Scale (OASIS) and the Abbreviated Overall Depression Severity and Impairment Scale (ODSIS): Psychometric Properties and Evaluation of the Czech Versions. International Journal of Environmental Research and Public Health, 18(19), 10337. https://doi.org/10.3390/ijerph181910337