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Cross-cultural adaptation and validation of the Spanish version of the Calgary Depression Scale for Schizophrenia.
Schizophr Res 2004; 68(2-3):349-56SR

Abstract

BACKGROUND

The Calgary Depression Scale for Schizophrenia (CDSS) is a valid tool to assess depression in schizophrenics and has been translated, adapted, and validated to be used in different non-English languages. Therefore, it may be predicted that a Spanish version of this scale will be also a valid instrument to assess symptoms of depression in patients with schizophrenia.

OBJECTIVE

We determined the validity of the Spanish version of the Calgary scale (CDSS-S).

METHODS

Outpatients and inpatients (n=93) diagnosed as having schizophrenia by DSM-IV criteria confirmed by SCID-IV interview were included. The Positive and Negative Syndrome Scale (PANSS), Hamilton Depression Rating Scale (HDRS-17 and HDRS-21 items), Montgomery-Asberg Depression Rating Scale (MADRS), Extrapyramidal Symptoms Rating Scale (ESRS), and Barnes Acathisia Rating Scale were administered by a first rater, whereas the CDSS-S was assessed by a second independent rater.

RESULTS

The internal consistency (Cronbach's alpha 0.83) and the interrater reliability (>0.73 intraclass correlation coefficient [ICC] for single items and 0.92 for total score) were good. The test-retest reliability was high (ICC of 0.89). The scale showed a good construct validity with statistically significant correlations with HDRS-17, HDRS-21, MADRS, and G6 item (depression) of PANSS. The CDSS showed no correlation with the positive subscale of PANSS and a weak correlation with the negative subscale, general psychopathology subscale, and total score of PANSS. A cut point of five showed 94.7% sensitivity, 86.5% specificity, and 70% and 98% positive and negative predictive values, respectively.

CONCLUSIONS

The Spanish version of CDSS is a valid instrument to assess depressive episodes for stabilized and acute patients with schizophrenia.

Authors+Show Affiliations

Department of Psychiatry, Hospital General de Granollers, Avda. Francesc Ribas s/n, E-08400, Granollers, Barcelona, Spain. 27765ssm@comb.esNo affiliation info availableNo affiliation info availableNo affiliation info availableNo affiliation info availableNo affiliation info availableNo affiliation info availableNo affiliation info availableNo affiliation info availableNo affiliation info available

Pub Type(s)

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

Language

eng

PubMed ID

15099616

Citation

Sarró, Salvador, et al. "Cross-cultural Adaptation and Validation of the Spanish Version of the Calgary Depression Scale for Schizophrenia." Schizophrenia Research, vol. 68, no. 2-3, 2004, pp. 349-56.
Sarró S, Dueñas RM, Ramírez N, et al. Cross-cultural adaptation and validation of the Spanish version of the Calgary Depression Scale for Schizophrenia. Schizophr Res. 2004;68(2-3):349-56.
Sarró, S., Dueñas, R. M., Ramírez, N., Arranz, B., Martínez, R., Sánchez, J. M., ... San, L. (2004). Cross-cultural adaptation and validation of the Spanish version of the Calgary Depression Scale for Schizophrenia. Schizophrenia Research, 68(2-3), pp. 349-56.
Sarró S, et al. Cross-cultural Adaptation and Validation of the Spanish Version of the Calgary Depression Scale for Schizophrenia. Schizophr Res. 2004 Jun 1;68(2-3):349-56. PubMed PMID: 15099616.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Cross-cultural adaptation and validation of the Spanish version of the Calgary Depression Scale for Schizophrenia. AU - Sarró,Salvador, AU - Dueñas,Rosa M, AU - Ramírez,Nicolás, AU - Arranz,Belén, AU - Martínez,Ramón, AU - Sánchez,José M, AU - González,José M, AU - Saló,Laura, AU - Miralles,Luisa, AU - San,Luis, PY - 2002/06/06/received PY - 2002/10/27/accepted PY - 2004/4/22/pubmed PY - 2004/7/24/medline PY - 2004/4/22/entrez SP - 349 EP - 56 JF - Schizophrenia research JO - Schizophr. Res. VL - 68 IS - 2-3 N2 - BACKGROUND: The Calgary Depression Scale for Schizophrenia (CDSS) is a valid tool to assess depression in schizophrenics and has been translated, adapted, and validated to be used in different non-English languages. Therefore, it may be predicted that a Spanish version of this scale will be also a valid instrument to assess symptoms of depression in patients with schizophrenia. OBJECTIVE: We determined the validity of the Spanish version of the Calgary scale (CDSS-S). METHODS: Outpatients and inpatients (n=93) diagnosed as having schizophrenia by DSM-IV criteria confirmed by SCID-IV interview were included. The Positive and Negative Syndrome Scale (PANSS), Hamilton Depression Rating Scale (HDRS-17 and HDRS-21 items), Montgomery-Asberg Depression Rating Scale (MADRS), Extrapyramidal Symptoms Rating Scale (ESRS), and Barnes Acathisia Rating Scale were administered by a first rater, whereas the CDSS-S was assessed by a second independent rater. RESULTS: The internal consistency (Cronbach's alpha 0.83) and the interrater reliability (>0.73 intraclass correlation coefficient [ICC] for single items and 0.92 for total score) were good. The test-retest reliability was high (ICC of 0.89). The scale showed a good construct validity with statistically significant correlations with HDRS-17, HDRS-21, MADRS, and G6 item (depression) of PANSS. The CDSS showed no correlation with the positive subscale of PANSS and a weak correlation with the negative subscale, general psychopathology subscale, and total score of PANSS. A cut point of five showed 94.7% sensitivity, 86.5% specificity, and 70% and 98% positive and negative predictive values, respectively. CONCLUSIONS: The Spanish version of CDSS is a valid instrument to assess depressive episodes for stabilized and acute patients with schizophrenia. SN - 0920-9964 UR - https://www.unboundmedicine.com/medline/citation/15099616/Cross_cultural_adaptation_and_validation_of_the_Spanish_version_of_the_Calgary_Depression_Scale_for_Schizophrenia_ L2 - https://linkinghub.elsevier.com/retrieve/pii/S0920996402004905 DB - PRIME DP - Unbound Medicine ER -