Understanding Depression Symptoms in Primary Care
Author Information
Author(s): Romera Irene, Delgado-Cohen Helena, Perez Teresa, Caballero Luis, Gilaberte Immaculada
Primary Institution: Clinical Research Department, Lilly SA, Madrid, Spain
Hypothesis
Depressive symptoms in patients with major depressive disorder (MDD) would be empirically grouped into symptomatic dimensions and that this grouping would be of clinical significance.
Conclusion
Depressive symptoms in patients with MDD in primary care cluster into four dimensions: core depressive, cognitive, anxiety, and somatic.
Supporting Evidence
- The study identified four factors that explain 36.9% of the variance in depressive symptoms.
- The four-factor structure was validated with high coefficients of congruence.
- Patients over 65 showed higher scores in core depressive and somatic symptoms.
- Only 31% of depressed patients were receiving antidepressant treatment.
Takeaway
Doctors found that people with depression show different types of symptoms, like feeling sad or having trouble thinking, and these can be grouped into four main categories.
Methodology
A factor analysis was performed on the Zung self-rating depression scale (ZSDS) items using promax oblique rotation.
Potential Biases
The study may be biased due to the underdiagnosis and undertreatment of depression in primary care settings.
Limitations
The factor solution accounted for only 36.9% of variance, and the study's cross-sectional nature limits the ability to assess stability of the factors.
Participant Demographics
The sample was predominantly female (75.2%), with an average age of 55 years.
Statistical Information
P-Value
p<0.001
Confidence Interval
95% CI: 3.24–3.34 for psychomotor retardation
Statistical Significance
p<0.001
Digital Object Identifier (DOI)
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