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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 1.

FIGURE 1.

There is a positive linear relationship between cumulative Mn exposure (mg Mn/m3-years) and the PI. Linear regression adjusting for age and sex indicated a 2.33 (95% CI, 0.93 to 3.74) greater PI for each mg Mn/m3-year of exposure, and that welders who ever conducted FCAW had a greater PI than other welders. CI, confidence interval; FCAW, flux core arc welding; Mn, manganese; PI, pallidal index.