IGFBP1 and coronary artery disorder: The average IGFBP1 level was higher in the critical CAD group (16.12 ng/ml, IQR 8.74–33.20 ng/ml) than that in the noncritical control group (10.02 ng/ml, IQR 5.82–12.98 ng/ml) (P < 0.001) (Table 1, Figure 1).