Figure 3From: Short-term effects of air pollution: a panel study of blood markers in patients with chronic pulmonary disease Comparison of associations between blood markers and PM 10 for all observations (black circle) and observations without smokers (black square) for fibrinogen, E-selectin and prothrombin fragment 1+2 lag 0 to lag 4 and 5-day-mean exposure. 31 male non-smokers and 7 male smokers with chronic pulmonary disease in Erfurt, Germany, between October 2001 and May 2002. IQR, interquartile range; PM10, mass concentration of particles less than 10 μm in diameter; lag 0 (1, 2, 3, 4, 5-day-mean) = average pollutant concentration 0-23 (24-47; 48-71, 72-95, 96-119, 0-119) hours prior to blood withdrawal.Back to article page