NCT06836804

Validity and Reliability of the Turkish Version of the Cardiac Depression Scale

Validity and Reliability Study of the Turkish Long and Short Forms of the Cardiac Depression Scale

• Status: Completed
• Phase: —
• Study type: Observational
• Enrollment: 360 (actual)
• Sponsor: Kırıkkale University · Academic / Other
• Sex: All
• Age: 18 Years
• Healthy volunteers: Not accepted

Summary

The Cardiac Depression Scale (CDS) in both its long and short forms has been validated in various languages and populations and is used to detect depression in individuals with cardiovascular disease (CVD). However, there is no validity and reliability study of the CDS for CVD patients in the Turkish population available in the literature, which prevents its use in Turkish population. The study aims to test the validity and reliability of the Turkish version of long and short forms of the CDS in Turkish individuals with CVD.

Detailed description

CVDs are among the leading causes of death worldwide and in Türkiye. Studies have shown that the prevalence of depression is higher among individuals with CVD compared to the general population. For example, higher rates of depression have been reported in patients who have undergone coronary bypass surgery, individuals who experienced myocardial infarction, and those with angina pectoris. Depression itself can be a cause of CVD, while CVD can also trigger depressive symptoms. The presence of depression in individuals with CVD is associated with diverse adverse outcomes including mortality. Therefore, routine depression screening is recommended for individuals with CVD. Many scales are currently used in clinical practice for depression screening. The CDS was specifically developed in 1996 for individuals with CVD and remains the only scale in the literature designed for this purpose. The CDS consists of 26 self-administered items and is used to identify and assess the severity of depressive symptoms, including emotional, cognitive, and somatic characteristics. Originally developed in English in Australia, the scale has undergone validity and reliability studies for individuals with different CVD conditions across various languages and cultures. The CDS takes approximately five minutes to administer and score, and demonstrates robust psychometric properties in distinguishing mild, moderate, and severe depression. CDS scores range from 26 to 182 with higher scores indicating more severe depressive symptoms. A score of 95 or higher on the CDS can detect major depression in individuals with CVD with 85% specificity and 97% sensitivity. Due to constraints such as time, resources, and personnel in clinical practice, two shorter forms of the CDS have been developed, each consisting of five items derived from the original scale. These short forms have also been validated in English for different CVD populations. However, no validity or reliability study of the CDS, in either its long or short forms, has been studied in Turkish population. Furthermore, the short forms of the CDS have not undergone validity and reliability analyses in any language other than English.

Conditions

• Cardiovascular Diseases
• Depression

Interventions

Type	Name	Description
OTHER	Sociodemographic Data Form	After inquiring about participants' sociodemographic characteristics, such as name, contact information, age, gender, marital status, education level, income, and place of residence, measurements of height, weight, and waist circumference will be obtained. Then, participants' CVD, psychiatric and other medical conditions, CVD risk factors, health history, and medications they are using will be queried. This information will be recorded in the sociodemographic data form. The sociodemographic data form has been prepared by the researchers.
OTHER	Short Form Health Survey	SF-36 is a self-assessment scale and can be completed in five minutes. SF-36 can evaluate both the negative and positive aspects of health. The scale consists of 36 items which are used to assess different health dimensions in 8 subscales: Physical functioning (10 items), social functioning (2 items), role limitations due to physical problems (4 items), role limitations due to emotional problems (3 items), mental health (5 items), energy/vitality (4 items), pain (2 items), and general health perception (5 items).
OTHER	Hospital Anxiety and Depression Scale	The HADS was designed in 1983 to identify anxiety and depression in individuals with physical illnesses. The HADS is a self-reported scale consisting of seven items each for the anxiety and depression subscales. Each item is scored from 0 to 3, and the total score for the anxiety and depression subscales is 21 points. The overall HADS score is obtained by summing the points from both subscales. A total subscale score between 0-7 indicates a normal test result, 8-10 indicates mild anxiety or depression, 11-15 indicates moderate anxiety or depression, and 16-21 indicates severe anxiety or depression. Higher scores represent higher levels of anxiety or depression, and the total HADS score reflects an overall measure of psychological distress. The survey can be completed in 2-5 minutes.
OTHER	Illness Intrusiveness Ratings Scale	The IIRS is an easy-to-administer scale designed to predict the psychosocial impact of chronic illness and to document and compare the effectiveness of therapeutic interventions. It consists of 13 questions which are completed by the patient. The scale measures how the limitations imposed by chronic and life-threatening diseases hinder participation in regular activities across 13 important aspects of life: Health, diet, work, active recreation (sports), passive recreation (reading, listening to music), finances, relationships with partners, sexual life, family relationships, other social relationships, self-expression/development, religious expression, and community and civic participation.
OTHER	Cardiac Depression Scale	CDS was designed to identify depression in individuals with CVDs. It consists of 26 items across 7 subscales. The subscales address issues such as sleep, uncertainty, mood, hopelessness, immobility, anhedonia, and cognition. The CDS is rated on a 7-point Likert scale, with seven items being reverse-coded. Based on patient feedback and clinical experience, two short forms were developed, each consisting of five questions. Both short forms showed good consistency with the original CDS. The first short form includes questions from the original CDS numbered 12, 24, 21, 10, and 9. The second short form includes questions from the original CDS numbered 12, 4, 25, 21, and 7.

Timeline

• Start date: 2025-02-11
• Primary completion: 2025-11-01
• Completion: 2026-01-01
• First posted: 2025-02-20
• Last updated: 2026-04-14

Locations

1 site across 1 country: Turkey (Türkiye)