Fig. 3From: The association between Parkinson’s disease and melanoma: a systematic review and meta-analysisAssociation between melanoma and PD according to geographic region. Subtotal = pooled odds ratios (ORs) within each subcategory. Overall = pooled OR for all studies. Squares indicate study specific ORs; error bars indicate 95 % confidence intervals (CIs); diamonds indicate ORs and 95 % CIs from pooled analysesBack to article page