Evaluating the CES-D Scale in Rheumatoid Arthritis Patients
Author Information
Author(s): Tanya Covic, Julie F Pallant, Philip G Conaghan, Alan Tennant
Primary Institution: University of Western Sydney
Hypothesis
The study aims to test the internal validity of the CES-D scale using Rasch analysis in a rheumatoid arthritis population.
Conclusion
The study resulted in a modified 13-item CES-D scale with good internal validity for assessing depression in rheumatoid arthritis patients.
Supporting Evidence
- The CES-D scale was modified from 20 items to 13 items to improve fit.
- Seven items were removed due to poor fit to the Rasch model.
- The new cut point for depression was found to be 9, corresponding to the original cut point of 16.
Takeaway
Researchers looked at a depression questionnaire to see if it works well for people with arthritis, and they found a better version with fewer questions.
Methodology
The CES-D was administered to 157 patients with RA over three time points within a 12-month period, and Rasch analysis was applied using RUMM2020 software.
Potential Biases
Potential bias due to the self-reported nature of depression assessments.
Limitations
The study had a relatively small sample size and findings should be tested in other RA populations.
Participant Demographics
Mean age of participants was 57.85 years, with 76% being female.
Statistical Information
P-Value
p<0.001
Statistical Significance
p<0.05
Digital Object Identifier (DOI)
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