Validation of the shortened Hunter Syndrome-Functional Outcomes for Clinical Understanding Scale (HS-FOCUS)

Table 3 Internal consistency at baseline and follow-up by patient type for HS-FOCUS total score and domains

		Caregiver-reported patients (3–26 years)		Self-reported patients (12–58 years)
		Initial assessment at baseline (n = 25)	Follow-up at 2–4 weeks (n = 25)	Initial assessment at baseline (n = 12)	Follow-up at 2–4 weeks (n = 13^a)
Cronbach’s alpha		0.89	0.86	0.94	0.92
Cronbach’s alpha with item deleted	Lower body	0.84	0.77	0.93	0.88
	Upper body	0.86	0.82	0.93	0.95
	School/work	0.91	0.88	0.92	0.89
	Activities	0.88	0.84	0.93	0.87
	Breathing	0.85	0.81	0.90	0.89

Cronbach’s alpha > 0.70 was considered as an acceptable level of internal consistency
^aOne patient had missing domain scores at initial assessment but had data for all domain scores at follow-up

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