Neurology 2002;58:1501-1504
© 2002 American Academy of Neurology
Increased risk of Parkinsons disease after depression
A retrospective cohort study
A. G. Schuurman, PhD,
M. van den Akker, PhD,
K. T.J.L. Ensinck, MSc,
J. F.M. Metsemakers, MD PhD,
J. A. Knottnerus, MD PhD,
A. F.G. Leentjens, MD and
F. Buntinx, MD PhD
From the Department of General Practice (Drs. Schuurman, van den Akker, Metsemakers, Knottnerus, and Buntinx, and K.T.J.L. Ensinck), Maastricht University, and Department of Psychiatry (Dr. Leentjens), Maastricht University Hospital, the Netherlands; and Department of General Practice (Dr. Buntinx), University of Leuven, Belgium.
Address correspondence and reprint requests to Dr. Marjan van den Akker, Department of General Practice, Maastricht University, P.O. Box 616, 6200 MD Maastricht, the Netherlands; e-mail: marjan.vandenakker{at}hag.unimaas.nl
Background: Depression has been linked to the occurrence of a number of somatic diseases. There are no data for PD.
Objective: To determine if depression is associated with a subsequent risk for PD.
Methods: A retrospective cohort study design based in general practice was applied. All subjects diagnosed with depression between 1975 and 1990 were included and matched with subjects with the same birth year who were never diagnosed with depression. Follow-up ended at April 30, 2000. Hazard ratios (HR) and 95% CI were calculated using Cox proportional hazards models adjusted for age, sex, and socioeconomic status. Subgroups based on sex and age at diagnosis of depression were evaluated separately.
Results: Among the 1,358 depressed subjects, 19 developed PD, and among the 67,570 nondepressed subjects, 259 developed PD. The HR (95% CI) for depressed vs nondepressed subjects was 3.13 (1.95 to 5.01) in multivariable analysis. Associations in subgroups were comparable with the overall association.
Conclusion: A strong positive association was found between depression and subsequent incidence of D.
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Correspondence:
Read all Correspondence
- Depression as a risk factor for Parkinson's disease?
- Flemming M. Nilsson, et al.
- Neurology Online, 27 Jun 2002
[Full text]
- Reply from Dr. van den Akker et al
- Marjan van den Akker, et al.
- Neurology Online, 8 Jul 2002
[Full text]
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