Significant improvement in the quality of life of Brazilian depressed outpatients 12 weeks following the start of antidepressants.

Studies on the impact of depression should go beyond estimating its prevalence and the severity of symptoms to include investigations that seek to establish how it influences the quality of life (QOL) of the affected individuals. Although some depression trials have included QOL measures, assessments were mostly retrospective and relatively infrequent. In the present investigation, 73 patients presenting a severe episode of major depression were assessed by the WHOQOL BREF and the Beck Depression Inventory (BDI) at the start of antidepressant treatment and again after a mean of 12 weeks. After analyses, depressed patients' QOL scores significantly improved in all the assessed domains (i.e., physical health, psychological, social relations, environmental, and overall QOL) over the study period. Additionally, there was a significant improvement in depressive symptoms between test and retest. Effect sizes for these differences ranged from 0.49 to 1.08 (i.e., medium to large effects). After multiple regression analyses, age, psychiatric comorbidity, and depressions scores were independent predictors of some of the QOL domains (i.e., physical, psychological, and overall). In conclusion, antidepressant treatment seems to be associated with significant improvements in multiple QOL domains in patients with severe major depression. However, our findings are preliminary and suggest that additional controlled and long-term studies are needed.

Quality of life in unipolar and bipolar depression: are there significant differences?

In the present investigation, we compared the impact of illness on quality of life (QOL) in adult outpatients with unipolar (N = 89) and bipolar (N = 25) depression. While attending a university hospital in southern Brazil, patients completed the WHO's QOL Instrument-Short Version and the Beck Depression Inventory. After analyses, patients with bipolar depression reported significantly lower scores on the psychological QOL domain (p = .013) than patients with unipolar depression. There were no significant differences between the study groups in terms of social and demographic variables, in the other QOL domains assessed (i.e., physical health, social relationships, and environmental), and in the severity of depressive symptoms. In conclusion, our findings suggest that patients with bipolar and unipolar depressions have different QOL profiles, and that this difference is probably independent of the severity of the mood disturbance and might be related to the higher rates of suicide observed in the bipolar population.