Table 3 Findings of markers of inflammation and coagulation per exposure group, adjusted for BMI

Risk marker	Ticket sellers (n = 21)	Train drivers (n = 29)	Platform workers (n = 29)
Risk marker	Sample 2 log mean (SD)	Sample 2 log mean (SD)	Sample 2 log mean (SD)
PAI-1 (kIE/l)	2.35 (1.26)	2.60 (0.97)	2.99* (0.96)
Hs-CRP (mg/l)	1.35 (0.42)	1.35 (0.46)	1.44† (0.57)
IL-6 (ng/l)	1.56 (0.99)	1.80 (1.13)	1.88‡ (1.07)
Fibrinogen (g/l)	2.10 (0.39)	2.10 (0.38)	2.18§ (0.36)

BMI, body mass index; Logarithmic mean and SD in sample 2 (after 2 days of exposure).
*In the comparison between platform workers and ticket sellers, p = 0.02 for PAI-1, †p = 0.25 for hs-CRP, ‡p = 0.15 for IL-6 and §p = 0.22 for fibrinogen.