Validity and Reliability of a Shorter Version of the Geriatric Depression Scale in Institutionalized Older Portuguese Adults

Aging & Mental Health (May 2019) DOI: 10.1080/13607863.2019.1695739

Posted: 6 Feb 2020

See all articles by Cristiana Duarte-Figueiredo

Cristiana Duarte-Figueiredo

Instituto Superior Miguel Torga (ISMT)

Helena Espirito Santo

Instituto Superior Miguel Torga; Universidade de Coimbra - Centro de Investigação do Núcleo de Estudos e Intervenção Cognitivo- Comportamental

Carla Sério

Instituto Superior Miguel Torga (ISMT)

Laura Lemos

Instituto Superior Miguel Torga

Mariana Marques

Instituto Superior Miguel Torga (ISMT)

Fernanda Daniel

Instituto Superior Miguel Torga

Date Written: January 12, 2019

Abstract

Objectives: Depressive symptoms are common in older adults in institutional contexts; however, there is a lack of validated measures for these settings. Identifying depressive symptoms can help clinicians to manage them and to prevent or delay their complications. This study aimed to validate the Geriatric Depression Scale (GDS) in an institutionalized sample of older adults.

Method: 493 institutionalized older people (73% women) aged 60 or over were evaluated through the GDS, the Mini International Neuropsychiatric Interview (MINI) (depression vs. no depression = 11% vs. 89%), the Geriatric Anxiety Inventory (GAI), the Positive Affect (PA) and Negative Affect (NA) Schedule, and the Satisfaction with Life Scale (SWLS). Test-retest reliability was assessed with 57 older adults.

Results: An 8-item version presented a Cronbach's alpha value of .87 with a single factor explaining its variance. The correlations (p < .01) attested the concurrent validity (GAI: r = .76; PA: r = -.22; AN: r = .62; SWLS: r = -.32). Test-retest reliability (6.51 months) was adequate (r = .52). ROC analysis (AUC = .82; sensitivity = 80%; specificity = 77%) and Youden index revealed a cutoff of 5/6 for the diagnosis of depression.

Conclusion: Results support the validity and the screening capacity of a short version of GDS in institutional contexts. Short screening instruments for depressive symptoms may facilitate their identification, allowing for timely clinical interventions in institutional settings.

Keywords: Depression, institutionalization, assessment, Geriatric Depression Scale

Suggested Citation

Duarte-Figueiredo, Cristiana and Espirito Santo, Helena and Sério, Carla and Lemos, Laura and Marques, Mariana and Daniel, Fernanda, Validity and Reliability of a Shorter Version of the Geriatric Depression Scale in Institutionalized Older Portuguese Adults (January 12, 2019). Aging & Mental Health (May 2019) DOI: 10.1080/13607863.2019.1695739, Available at SSRN: https://ssrn.com/abstract=3519177

Cristiana Duarte-Figueiredo

Instituto Superior Miguel Torga (ISMT) ( email )

Largo da Cruz de Celas nº1
Coimbra, Coimbra 3000-132
Portugal

Helena Espirito Santo (Contact Author)

Instituto Superior Miguel Torga ( email )

Largo da Cruz de Celas nº1
Coimbra, Coimbra 3000-132
Portugal
239404608 (Phone)

Universidade de Coimbra - Centro de Investigação do Núcleo de Estudos e Intervenção Cognitivo- Comportamental ( email )

Portugal

Carla Sério

Instituto Superior Miguel Torga (ISMT) ( email )

Largo da Cruz de Celas nº1
Coimbra, Coimbra 3000-132
Portugal

Laura Lemos

Instituto Superior Miguel Torga ( email )

Largo da Cruz de Celas nº1
Coimbra, Coimbra 3000-132
Portugal

Mariana Marques

Instituto Superior Miguel Torga (ISMT) ( email )

Largo da Cruz de Celas nº1
Coimbra, Coimbra 3000-132
Portugal

Fernanda Daniel

Instituto Superior Miguel Torga ( email )

Largo da Cruz de Celas nº1
Coimbra, Coimbra 3000-132
Portugal

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