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Table 4 Multiple linear regression showing the association between mean PM2.5 (μg/m3) from 2006–2011 and AHRR (cg05575921) methylation

From: Methylation at cg05575921 of a smoking-related gene (AHRR) in non-smoking Taiwanese adults residing in areas with different PM2.5 concentrations

Variable Model 1 Model 2
β P value β P value
PM2.5 − 0.00115 < .001 − 0.00124 < .001
Sex (reference: women)     
 Men − 0.01489 < .001 − 0.01416 < .001
Age − 0.00023 0.083 − 0.00022 0.116
Alcohol Drinking (reference: no)     
 Former − 0.01043 0.357 − 0.01494 0.238
 Current − 0.00534 0.473 − 0.00430 0.603
Exercise (reference: no)     
 Yes − 0.00196 0.495 − 0.00183 0.545
BMI − 0.00007 0.844 0.00003 0.942
SHS (reference: no)   
 Yes − 0.00115 0.802
  1. Model 1 included SHS in the analysis, model 2 excluded SHS from the analysis, SHS second-hand smoke