Table 2.

Median levels of VWF antigen, VWFpp, and VWFpp/VWF:Ag ratio in healthy individuals and patients.

VARIABLES	MEDIAN (25TH-75TH PERCENTILE)
	HEALTHY INDIVIDUALS	PATIENTS	aP VALUE
VWF:Ag (IU/dL)
All blood group	128 (94–163)	242 (202–319)	<0.001
O blood group	95 (83–126)	259 (239–293)	<0.001
Non-O blood group	148 (125–180)	231 (194–340)	<0.001
VWFpp (U/dL)
All blood group	83 (74–98)	230 (141–307)	<0.001
O blood group	76 (62–93)	187 (115–266)	<0.001
Non-O blood group	83 (76–102)	234 (141–317)	<0.001
VWFpp/VWF:Ag ratio
All blood group	0.7 (0.6–0.8)	0.9 (0.6–1.2)	0.006
O blood group	0.8 (0.7–0.9)	0.6 (0.4–1.0)	0.531
Non-O blood group	0.6 (0.5–0.8)	0.9 (0.7–1.2)	<0.001

Note:

^aP < 0.05 is considered statistically significant.

Abbreviations: VWF, von Willebrand factor; VWF:Ag, von Willebrand factor antigen; VWFpp, von Willebrand factor propeptide.