Correlation between sCR1 serum concentration and prothrombin time (PT) (a), albumin (b), and bilirubin (c). Numbers refer to Child–Pugh groups (5, 6, 7, 8, 9, 10, 11–15). Significant correlation in cirrhotic patients, grouped according to Child–Pugh classification, between sCR1 serum levels and (a) PT (r = − 0.95; P = 0.001), (b) albumin (r = − 0.85; P = 0.01) and (c) bilirubin (r = 0.78; P < 0.05).