Factors associated with indoor PM_2.5 exposure attributable to SHS exposure in venues (N = 455) throughout Greece, the Hellenic Air Monitoring Study, 2010–2011.

Abbreviations: Adj. Beta = Adjusted Beta coefficient; St. Error = Standard error; Ref = Reference Category; PM2.5 = Particulate matter ≤2.5 microns in diameter; SHS = secondhand smoke; N = total number of sampled sites. 1Mixed effects Linear regression analyses adjusted for all other variables in the table.