Programme no. 146-OP
Comparison Between the Montgomery Asberg Depression Rating Scale-Self (MADRS -S) and the Beck Depression Inventory II (BDI-II) in Primary Care
Carl Wikberg*1, Shabnam Nejati2
11Department of Primary Health Care,Institute of Medicine,Gothenburg,Sweden, 21Department of Primary Health Care,Institute of Medicine,Gothenburg,Sweden
* = Presenting author
Objectives: The purpose of this study was to compare these 2 instruments in the primary care setting.
Background: The Montgomery Asberg Depression Rating Scale-Self (MADRS-S) and the Beck Depression Inventory II (BDI-II) are commonly used self-assessment instruments for screening and diagnosis of depression. The BDI-II has 21 items and MADRS-S has 9 items. These instruments have been tested with psychiatric inpatients but not in outpatient primary care, where most patients with symptoms of depression initially seek treatment.
Results: A good correlation was observed between the 2 instruments: 0.66 and 0.62 in the 2 study cohorts. The reliability within the 2 study cohorts was good for both MADRS-S (Cronbach alpha, 0.76 for both cohorts) and BDI-II items (Cronbach alpha, 0.88 and 0.85).
Material/Methods: Data were collected from 2 ongoing randomized controlled trials in Sweden. There were 146 patients (73 patients each from both trials) who had newly diagnosed mild or moderate depression and who had assessment with both MADRS-S and BDI-II at primary care centers. Comparability and reliability of the instruments were estimated by Pearson product moment correlation and Cronbach alpha.
Conclusion: The 2 instruments showed good comparability and reliability for low, middle, and high total depression scores. The MADRS-S may be used as a rapid, easily administered, and inexpensive tool in primary care and has results comparable to BDI-II in all domains.
Points for discussion:
How do/should we use self-assessment in Primary Care?
How can we enhance the quality of depression treatment in Primary Care?