NO 2 demonstrating an overall protective impact on PD ( Figure 1 ) onset changed its direction to a borderline significant effect among patients at second SES level (OR: 1.07 (95%CI: 0.98; 1.17)). 3.2.
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The sentences
Ozone (O 3 ) was also adversely linked to PD, although with a borderline significance, OR: 1.12 (95%CI: 0.99; 1.25).