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Table 2 Air pollution exposure measurements, as calculated from means of each trial

From: Particulate matter exposure and health impacts of urban cyclists: a randomized crossover study

Pollutanta Downtown route Residential route Ratio of downtown: residential routeb 95% CI of the downtown – residential difference
Mean [SD] Median; range (min, max) GM [GSD] Mean [SD] Median; range (min, max) GM [GSD]
PNC (pt/cm³) 16,870 [4838] 15,740 (9597, 29,060) 16,226 [1.33] 10,840 [5159] 10,280 (977, 22,130) 9367 [1.86] 1.53 3695, 8376
PM1 (μg/m3) 5.0 [4.2] 3.7 (1.2, 20) 3.8 [2.0] 3.8 [2.9] 2.9 (0.48, 12) 2.9 [2.1] 1.3 −0.44, 2.9
PM2.5 (μg/m3) 7.3 [5.3] 5.5 (2.4, 24) 6.0 [1.9] 5.8 [3.7] 4.4 (1.1, 15) 4.7 [1.9] 1.3 −0.58, 3.6
PM10 (μg/m3) 13 [7.3] 11 (4.3, 33) 11 [1.8] 9.9 [5.6] 8.8 (2.2, 29) 8.4 [1.8] 1.2 −0.14, 5.9
  1. aComplete PM data was missing for 6 trials with PNC data missing for 3 trials and PM data missing for 3 trials
  2. bRatio of the median of the Downtown Route compared to the median of the Residential Route