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Levodopa/carbidopa/entacapone versus levodopa/dopa-decarboxyiase inhibitor for the treatment of Parkinson's disease: systematic review, meta-analysis, and economic evaluation

Authors Yi ZM, Qiu TT, Zhang Y, Liu N, Zhai SD

Received 19 January 2018

Accepted for publication 28 February 2018

Published 16 April 2018 Volume 2018:14 Pages 709—719

DOI https://doi.org/10.2147/TCRM.S163190

Checked for plagiarism Yes

Review by Single-blind

Peer reviewers approved by Dr Amy Norman

Peer reviewer comments 2

Editor who approved publication: Professor Deyun Wang


Zhan-Miao Yi,1–3 Ting-Ting Qiu,1,4 Yuan Zhang,5 Na Liu,6 Suo-Di Zhai1,3

1Department of Pharmacy, Peking University Third Hospital, 2Department of Pharmacy Administration and Clinical Pharmacy, Peking University School of Pharmaceutical Science, 3Institute for Drug Evaluation, Peking University Health Science Center, Beijing, China; 4Public Health Department, Aix-Marseille University, Marseille, France; 5Department of Health Research Methods, Evidence, and Impact, McMaster University, Hamilton, ON, Canada; 6Department of Neurology, Peking University Third Hospital, Beijing, China


Aims: To review the evidence for efficacy, safety, and cost-effectiveness of levodopa/carbidopa/entacapone (LCE) compared with levodopa/dopa-decarboxyiase inhibitor (DDCI) for Parkinson’s disease (PD).
Methods: PubMed, Embase, the Cochrane Library, and Chinese databases WangFang Data, Chinese Sci-tech Journals Database and China National Knowledge Infrastructure, as well as ClinicalTrials.gov, were searched for randomized controlled trials with “levodopa/carbidopa/entacapone” as keywords. The search period was from inception to August 2017. We conducted meta-analyses to synthesize the evidence quantitatively.
Results: A total of 5,693 records were obtained. We included seven randomized controlled trials and one cost-effectiveness study after the screening process. Compared with levodopa–DDCI, LCE improved patient Unified Parkinson’s Disease Rating Scale (UPDRS) II score (mean difference [MD] -1.17, 95% CI -1.64 to -0.71), UPDRS III score (MD -1.55, 95% CI -2.29 to -0.81), and Schwab and England daily activity rating (MD 2.05, 95% CI 0.85–3.26). There was no statistically significant difference in the risk of serious adverse events (AEs) or discontinuation due to AEs in patients with LCE, and the risk of total AEs was higher in the LCE group (risk ratio [RR] 1.33, 95% CI 1.05–1.70). The incremental cost-effectiveness ratio of LCE was £3,105 per quality-adjusted life-year (QALY) gained in the UK.
Conclusion: LCE can improve PD patients’ motor symptoms and daily living functioning when compared with levodopa/DDCI.

Keywords:
Unified Parkinson’s Disease Rating Scale, quality of life, wearing off, adverse events, cost-effectiveness, health technology assessment

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