Changes in Depression and Quality of Life
Author Information
Author(s): Paula H Diehr, Ann M Derleth, Stephen P McKenna, Mona L Martin, Donald M Bushnell, Gregory Simon, Donald L Patrick
Primary Institution: University of Washington
Hypothesis
Do changes in depressive symptoms correlate with changes in health status and quality of life in clinically depressed individuals?
Conclusion
In clinically depressed persons, measures of physical health, mental health, and quality of life showed consistent longitudinal associations with measures of depressive symptoms.
Supporting Evidence
- All measures improved significantly over time.
- Mental health measures showed the greatest change.
- Physical health measures showed the least change.
- Quality of life measures showed intermediate change.
- The change in quality of life could be explained by changes in depressive symptoms.
Takeaway
When people feel less depressed, they also tend to feel better physically and have a better quality of life.
Methodology
The study followed 982 clinically depressed individuals over 9 months, measuring depressive symptoms, physical and mental health, and quality of life at multiple time points.
Potential Biases
Self-reports may be biased due to the depressive state of participants.
Limitations
The study's findings may not generalize to less severe depression, and it relied on self-reported measures.
Participant Demographics
Mean age was 41 years, with 71% being women.
Statistical Information
Statistical Significance
p<0.05
Digital Object Identifier (DOI)
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