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Table 3 Comparison of baseline values between the road test and the clean room

From: Subclinical responses in healthy cyclists briefly exposed to traffic-related air pollution: an intervention study

Endpoint Road test Clean room
Exhaled NO, ppb 29 (19 - 41) 24 (15 - 39)
PFA closure time, s 163 (135-197) 154 (125-176)
Plasma IL-6, pg/mL 1.47 (0.99-2.28) 1.53 (1.20-1.90)
Clara cell protein, μg/L 7.7 (5.6-11.5) 7.7 (5.6-10.3)
Blood leukocyte counts, per μL 4964 (1208) 4883 (1174)
Blood neutrophil counts, per μL 2937 (874) 2888 (884)
Percentage blood neutrophils,% 59 (8.0) 59 (7.1)
  1. Data are geometric mean (25-75 percentile) for non-normally distributed variables or mean (SD) for normally distributed variables
  2. Paired t-test: p > 0.08