Psychometric assessment of the Cardiac Depression Scale Short Form in cardiac outpatients

2017-03

Hare, David L

Selvadurai, Louisa P

Wang, Jerry Q

Yau, Ho Hin

Stone, Madeline J

Raman, Bhairavi

Wu, Nibo

Shi, William Y

Toukhsati, Samia R

Cardiac Depression Scale Short Form

cardiovascular disease

depression

psychometric

screening

Journal Article

0000-0001-9554-6556

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10.1177/1474515116652759

BACKGROUND: Depression is common in patients with cardiovascular disease and is a risk marker for increased mortality. The valid and reliable detection of depression is fundamental to the appropriate management of these patients. AIM: The aim of this study was to evaluate the psychometric characteristics of the Cardiac Depression Scale Short Form 1 (DS-SF1) and the Cardiac Depression Scale Short Form 2 (DS-SF2) for screening cardiac outpatients in clinical settings. METHODS: Adult cardiac outpatients attending a cardiovascular clinic completed the Cardiac Depression Scale (CDS), two versions of the DS-SF (DS-SF1 and DS-SF2) and the Physical Health Questionnaire 2 (PHQ2-Y/N) prior to their cardiac consultation. RESULTS: Data from 326 patients (224 men; mean±SD age 66.25±14.39 years) were analysed. The DS-SF1 (mean score 16.28±5.70) had good construct validity with the CDS ( r=0.77; p<0.0001), adequate convergence with the PHQ2-Y/N ( r=0.59; p<0.0001) and good internal consistency (α=0.73). The DS-SF2 (mean score 15.80±6.80) had a better construct validity with the CDS ( r=0.84; p<0.0001) and the PHQ2-Y/N ( r=0.69; p<0.0001) and better internal consistency (α=0.82). The DS-SF2 showed strong criterion validity with the CDS with a DS-SF2 ⩾15 cut-point yielding 90% sensitivity and 73% specificity (area under the curve 0.92) for detecting depression (CDS ⩾95). CONCLUSION: These findings confirm the excellent psychometric properties of the DS-SF2 as an ideal tool for screening depression in cardiac patients in clinical practice. The DS-SF2 should be regarded as the definitive version of the DS-SF.

link

European Journal of Cardiovascular Nursing 2017; 16(3): 249-255

European Journal of Cardiovascular Nursing