Table 2

Personal particulate matter ≤2.5 µm aerodynamic diameter concentrations (μg/m3) from DustTrak aerosol monitor over the monitoring period

Lag 0*Lag 6†
NMedianMean (SD)Q25, Q75NMedianMean (SD)Q25, Q75
Entire period299341274 (754)13, 186235648300 (48)14, 229
Not working233126123 (496)10, 70176528154 (581)10, 84
Working662420804 (1162)146, 1104591404736 (909)143, 1060
Smokers112479422 (1077)26, 354866111456 (1004)26, 354
Non-smokers186928185 (439)10, 103149032209 (471)10, 128
  • *Lag 0 represents concurrent exposure and arrhythmia monitoring.

  • †Lag 6 is the exposure in the 6 h prior to ectopy monitoring.