Table 3.

Demographics from WAPPS patients who have switched between factor concentrates

Parameter	Whole cohort	FVIII	FIX
Subjects (n)	449	394	55
Switches (n)	647	591	56
Age (y)	1‐78	1‐78	2‐68
Body weight (kg)	10‐150	10‐150	13‐117
As of September 2018.

FVIII, factor VIII; FIX, factor IX; WAPPS, Web‐Accessible Population Pharmacokinetics Service.