[Non-pharmacological influencing factors of motor complications in Parkinson's disease: a systematic review].

Objective To make a systematic review of risk factors associated with motor complications in Parkinson's disease(PD).Methods Medline,EMbase and Cochrane Database were used to search for prospective and retrospective studies on the factors associated with dyskinesia and motor fluctuations.Methodological quality Was checked by two independent reviewers.Results Earlier age at onset.female gender and a long disease duration might be the risk factors of motor complications.Conclusion More high-quality clinical trials are required to evaluate the factors associated with motor complications. Key words: Parkinson's disease; Byskinesias; Risk factors; Systematical review