Table 1.

Patients’ baseline characteristics (n = 45 patients, 178 joints).

	Median (25th–75th percentile) or n (%)	Range
Age (years)	10 (6–15)	3–17
Elbow (n = 32 joints)
HJHS	2.5 (0–10)	0–16
US	4 (0–7)	0–12
Knee (n = 85 joints)
HJHS	2 (0–9.5)	0–17
US	0 (0–5)	0–13
Ankle (n = 61 joints)
HJHS	2 (0–5)	0–13
US	0 (0–4)	0–11
Total (n = 178 joints)
HJHS	2 (0–7)	0–17
US	0 (0–5)	0–13

HJHS, Haemophilia Joint Health Score; US, ultrasound.