Table 3.

Prevalence of severe haemophilia A and B in CHESS countries (all ages)

Country	Haemophilia A			Haemophilia B
	Population (X) [34]	Severe (%) (Y) [43–47]	Est. severe pop. (X $\times$ Y)	Population (X) [34]	Severe (%) (Y) [43–45, 47, 48]	Est. severe pop. (X $\times$ Y)
France	5,400	34	1,836	1,201	30	360
Germany	3,422	59	2,019	644	38	245
Italy	3,779	47	1,776	750	37	278
Spain	1,679	33	554	277	33	91
UK	5,646	35	1,976	1,165	34	396
All CHESS countries			8,123			1,370