Table 3.

Characteristics of children with haemophilia by risk group, 2008.

Children	Haemophilia A		Haemophilia B (CHB)§
	Receiving no bypassing agents (CHAB−)†	Receiving bypassing agents (CHAB+)‡
No. of children	226	16	36
Age (mean)	9	9¶	9
Clotting factor
No. of people (%)	182 (81)	16 (100)‡‡*	34 (94)††*
Emergency department (ED) visits
No. of people (%)	119 (53)	13 (81)††*	18 (50)††
Frequency among ED visitors	2.7	4.0¶*	2.8¶
Type of care: N (% of people who received each type of care)
Inpatient	35 (15)	8 (50)††**	8 (22)††
Prescription	166 (73)	16 (100)‡‡*	31 (86)††
Total expenditures ($)
Median	23 697	55 038§§	49 521§§
Mean	83 981	509 778¶**	125 522¶
95th percentile	313 309	4 055 362	590 268
Expenditures for clotting factor ($)
Median	7548	17 102§§	27 644§§*
Mean	64 282	304 599¶**	115 388¶**
95th percentile	273 706	2 720 805	573 428

^*and

^**represent a 5% and a 1% level of significance, respectively.

^†Reference.

^‡Statistical tests examine the null hypothesis that the CH_AB⁻ group has the same characteristics as the CH_AB⁺ group.

^§Statistical tests examine the null hypothesis that the CH_AB⁻ group has the same characteristics as the CH_B group.

^¶t-test.

^††Chi-squared test.

^‡‡Fisher’s exact test.

^§§Wilcoxon–Mann–Whitney test.