Table 7.

Known-group validity: HJHS^a

HJHS item	Self-reported arthritis/bone/joint problemsb	Self-reported lifetime % prophylaxisc	Self-reported current treatment regimend	Site-reported hemophilia severitye
HJHS domains
Knee	<0.0001	0.002	0.9842	0.0018
Elbow	<0.0001	0.0031	0.0939	<0.0001
Ankle	<0.0001	<0.0001	0.0002	<0.0001
Global gait	<0.0001	0.0027	0.0031	0.0002
HJHS score
Global score	<0.0001	<0.0001	0.0072	<0.0001

Notes:

^aWilcoxon rank sum test, P-values shown;

^byes or no;

^cnever, 25%–49%, 50%–74%, 75%–99%, or always;

^don-demand or prophylaxis;

^esevere or mild/moderate. Bold values indicate P-values <0.05.

Abbreviation: HJHS, Hemophilia Joint Health Score.