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. Author manuscript; available in PMC: 2020 Mar 26.
Published in final edited form as: J Occup Environ Med. 2019 Aug;61(8):641–645. doi: 10.1097/JOM.0000000000001634

FIGURE 2.

FIGURE 2.

There is a positive linear relationship between the PI and the examiner-adjusted UPDRS3 score. The participant with the highest PI was an influential point. The LOWESS between the PI and UPDRS3 was more linear without this participant. Linear regression adjusted for age and sex indicated 0.10 (95% CI,–0.03 to 0.23) greater UPDRS3 for each unit increase in the PI. All participants with a PI more than 125 were exposed to Mn and had a UPDRS3 score more than 6. LOWESS, locally weighted scatterplot smoothing; PI, pallidal index; UPDRS3, Unified Parkinson’s Disease Rating Scale motor subsection 3.