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Portuguese version of the Delirium Rating Scale-Revised-98: reliability and validity.
Int J Geriatr Psychiatry. 2008 May; 23(5):472-7.IJ

Abstract

OBJECTIVE

To assess the validity and the reliability of the Portuguese version of the Delirium Rating Scale-Revised-98 (DRS-R-98).

METHODS

The scale was translated into Portuguese and back-translated into English. After assessing its face validity, five diagnostic groups (n=64; delirium, depression, dementia, schizophrenia and others) were evaluated by two independent researchers blinded to the diagnosis. Diagnosis and severity of delirium as measured by the DRS-R-98 were compared to clinical diagnosis, Mini-Mental State Exam, Confusion Assessment Method, and Clinical Global Impressions scale (CGI).

RESULTS

Mean and median DRS-R-98 total scores significantly distinguished delirium from the other groups (p<0.001). Inter-rater reliability (ICC between 0.9 and 1) and internal consistency (alpha=0.91) were very high. DRS-R-98 severity scores correlated highly with the CGI. Mean DRS-R-98 severity scores during delirium differed significantly (p<0.01) from the post-treatment values. The area under the curve established by ROC analysis was 0.99 and using the cut-off value of 20 the scale showed sensitivity and specificity of 92.6% and 94.6%, respectively.

CONCLUSION

The Portuguese version of the DRS-R-98 is a valid and reliable measure of delirium that distinguishes delirium from other disorders and is sensitive to change in delirium severity, which may be of great value for longitudinal studies.

Authors+Show Affiliations

Post-Graduate Program in Medical Sciences, Federal University of Santa Catarina. danielnegreiros@yahoo.comNo affiliation info availableNo affiliation info availableNo affiliation info available

Pub Type(s)

Comparative Study
Journal Article
Research Support, Non-U.S. Gov't
Validation Study

Language

eng

PubMed ID

17922493

Citation

de Negreiros, Daniel Philippi, et al. "Portuguese Version of the Delirium Rating Scale-Revised-98: Reliability and Validity." International Journal of Geriatric Psychiatry, vol. 23, no. 5, 2008, pp. 472-7.
de Negreiros DP, da Silva Meleiro AM, Furlanetto LM, et al. Portuguese version of the Delirium Rating Scale-Revised-98: reliability and validity. Int J Geriatr Psychiatry. 2008;23(5):472-7.
de Negreiros, D. P., da Silva Meleiro, A. M., Furlanetto, L. M., & Trzepacz, P. T. (2008). Portuguese version of the Delirium Rating Scale-Revised-98: reliability and validity. International Journal of Geriatric Psychiatry, 23(5), 472-7.
de Negreiros DP, et al. Portuguese Version of the Delirium Rating Scale-Revised-98: Reliability and Validity. Int J Geriatr Psychiatry. 2008;23(5):472-7. PubMed PMID: 17922493.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Portuguese version of the Delirium Rating Scale-Revised-98: reliability and validity. AU - de Negreiros,Daniel Philippi, AU - da Silva Meleiro,Alexandrina Maria Augusto, AU - Furlanetto,Letícia M, AU - Trzepacz,Paula T, PY - 2007/10/9/pubmed PY - 2008/12/17/medline PY - 2007/10/9/entrez SP - 472 EP - 7 JF - International journal of geriatric psychiatry JO - Int J Geriatr Psychiatry VL - 23 IS - 5 N2 - OBJECTIVE: To assess the validity and the reliability of the Portuguese version of the Delirium Rating Scale-Revised-98 (DRS-R-98). METHODS: The scale was translated into Portuguese and back-translated into English. After assessing its face validity, five diagnostic groups (n=64; delirium, depression, dementia, schizophrenia and others) were evaluated by two independent researchers blinded to the diagnosis. Diagnosis and severity of delirium as measured by the DRS-R-98 were compared to clinical diagnosis, Mini-Mental State Exam, Confusion Assessment Method, and Clinical Global Impressions scale (CGI). RESULTS: Mean and median DRS-R-98 total scores significantly distinguished delirium from the other groups (p<0.001). Inter-rater reliability (ICC between 0.9 and 1) and internal consistency (alpha=0.91) were very high. DRS-R-98 severity scores correlated highly with the CGI. Mean DRS-R-98 severity scores during delirium differed significantly (p<0.01) from the post-treatment values. The area under the curve established by ROC analysis was 0.99 and using the cut-off value of 20 the scale showed sensitivity and specificity of 92.6% and 94.6%, respectively. CONCLUSION: The Portuguese version of the DRS-R-98 is a valid and reliable measure of delirium that distinguishes delirium from other disorders and is sensitive to change in delirium severity, which may be of great value for longitudinal studies. SN - 0885-6230 UR - https://www.unboundmedicine.com/medline/citation/17922493/Portuguese_version_of_the_Delirium_Rating_Scale_Revised_98:_reliability_and_validity_ L2 - https://doi.org/10.1002/gps.1906 DB - PRIME DP - Unbound Medicine ER -