Research Article

Parkinson’s Disease-Related Risk of Suicide and Effect of Deep Brain Stimulation: Meta-Analysis

Figure 5

Funnel plots of publication bias analysis based on the trim-and-fill method. No significant publication bias was found in studies comparing (a) Parkinson’s disease (PD) patients with general population. (b) After excluding Myslobodsky’s study, there was still no significant publication bias. (c) Among studies comparing PD patients with non–central nervous system diseases (psoriasis and glaucoma) controls, significant publication bias was found. ((d) and (e) Significant publication bias was also found among studies comparing PD patients who underwent deep brain stimulation (DBS) with PD patients received only drug therapy, and among studies comparing PD patients who underwent DBS with general population.
(a)
(b)
(c)
(d)
(e)