Tai Chi and Parkinson's disease (PD): A systematic overview of the scientific quality of the past systematic reviews

Ref ID	44
First Author	K. K. Kedzior
Journal	COMPLEMENTARY THERAPIES IN MEDICINE
Year Of Publishing	2019
URL	https://www.sciencedirect.com/science/article/abs/pii/S0965229919302729?via%3Dihub
Keywords	• Reproducibility • Protocols • Error • Low reporting quality • Overlapping reviews/redundancy • Complimentary & Alternative
Problem(s)	• No registered or published protocol • Methods not described to enable replication • Reasons for excluding potentially eligible studies not provided • Incorrect interpretation or statistical inference error from meta-analysis • Conflicts of interest or funding of included studies not assessed • Low reporting (PRISMA) quality • Low methodological (AMSTAR) quality • Redundant / overlapping / duplicated review question; leads to research waste
Number of systematic reviews included	10
Summary of Findings	Limitations of the ten included systematic reviews of Tai Chi for Parkinson's Disease were the high overlap in the primary data and the lack of either the review protocol, the list of excluded studies or the conflict of interest statement in the primary studies. The critical problems were that the qualitative data synthesis relied on the statistical significance of results in the primary studies with small sample sizes and that the computational details of meta-analysis were inadequately reported.
Did the article find that the problem(s) led to qualitative changes in interpretation of the results?	N/A
Are the methods of the article described in enough detail to replicate the study?	Yes