Table 1 Mean (SD) of FVIII activity and... | American Society of Hematology

Table 1

Mean (SD) of FVIII activity and VWF Ag by race and sex (N = 10 434)

Characteristic	Total	EA women, N = 4282	EA men, N = 3774	AA women, N = 1505	AA men, N = 873	P*
Factor VIII (%)	127.59 (37.32)	125.51 (34.05)	121.13 (33.19)	144.49 (46.31)	135.44 (41.84)	< 1 × 10⁻³¹
VWF (%)	113.53 (45.15)	108.44 (41.10)	111.34 (42.36)	128.15 (54.42)	122.74 (51.16)	< 1 × 10⁻³¹
FVIII-VWF ratio†	1.20 (0.31)	1.23 (0.32)	1.16 (0.30)	1.22 (0.35)	1.18 (0.30)	4.27 × 10⁻²⁵

Characteristic	Total	EA women, N = 4282	EA men, N = 3774	AA women, N = 1505	AA men, N = 873	P*
Factor VIII (%)	127.59 (37.32)	125.51 (34.05)	121.13 (33.19)	144.49 (46.31)	135.44 (41.84)	< 1 × 10⁻³¹
VWF (%)	113.53 (45.15)	108.44 (41.10)	111.34 (42.36)	128.15 (54.42)	122.74 (51.16)	< 1 × 10⁻³¹
FVIII-VWF ratio†	1.20 (0.31)	1.23 (0.32)	1.16 (0.30)	1.22 (0.35)	1.18 (0.30)	4.27 × 10⁻²⁵

EA indicates Americans of European descent; and AA, Americans of African descent.

ANOVA.

One subject was excluded from the statistics for the ratio because he was considered to be an outlier with a ratio of 6.13 (> 15 × SD).