Long-term effect of cognitive behavioural therapy and doxycycline treatment for patients with Q fever fatigue syndrome: One-year follow-up of the Qure study

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Publication year
2019Source
Journal of Psychosomatic Research, 116, (2019), pp. 62-67ISSN
Publication type
Article / Letter to editor

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Organization
Internal Medicine
Medical Psychology
Journal title
Journal of Psychosomatic Research
Volume
vol. 116
Page start
p. 62
Page end
p. 67
Subject
Radboudumc 3: Disorders of movement DCMN: Donders Center for Medical Neuroscience; Radboudumc 4: lnfectious Diseases and Global Health RIHS: Radboud Institute for Health Sciences; Radboudumc 4: lnfectious Diseases and Global Health RIMLS: Radboud Institute for Molecular Life SciencesAbstract
BACKGROUND: Previously, we reported a randomized placebo-controlled trial, the Qure study, showing that cognitive behavioural therapy (CBT), and not doxycycline, was significantly more effective than placebo in reducing fatigue severity in Q fever fatigue syndrome (QFS) patients. This follow-up study evaluates the long-term effect of these treatment regimens, 1year after completion of the original trial. METHODS: All patients who completed the Qure study, CBT (n=50), doxycycline (n=52), and placebo (n=52), were included in this follow-up study. Between twelve and fifteen months after end of treatment (EOT), patients filled out web-based questionnaires including the main outcome measure fatigue severity, assessed with the Checklist Individual Strength (CIS), subscale fatigue severity. RESULTS: Fatigue severity in the CBT, but not doxycycline or placebo, group was significantly increased at follow-up compared to EOT (respective means 39.5 [95% CI, 36.2-42.9] and 31.3 [95% CI, 27.5-35.1], mean difference 8.2 [95% CI, 4.9-11.6]; P<.001). Fatigue severity scores of CBT (adjusted mean 39.8 [95% CI, 36.1-43.4]) and doxycycline (adjusted mean 41.0 [95% CI, 37.5-44.6]) groups did not significantly differ from the placebo group (adjusted mean 37.1 [95% CI, 33.6-40.7]; P=.92 and P=.38, respectively). CONCLUSION: The beneficial effect of CBT on fatigue severity at EOT was not maintained 1year thereafter. Due to its initial beneficial effect and side effects of long-term doxycycline use, we still recommend CBT as treatment for QFS. We suggest further investigation on tailoring CBT more to QFS, possibly followed by booster sessions.
This item appears in the following Collection(s)
- Academic publications [227437]
- Electronic publications [107154]
- Faculty of Medical Sciences [86157]
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