Table 3.

Internal consistency comparison between Development and Composite samples

PCQLI form	Sample	Cronbach's α
		DI	PI	TS
Child	Development	0.85	0.74	0.89
	Composite	0.85	0.79	0.90
Parent of child	Development	0.91	0.84	0.94
	Composite	0.89	0.83	0.93
Adolescent	Development	0.90	0.83	0.93
	Composite	0.89	0.85	0.93
Parent of adolescent	Development	0.92	0.88	0.95
	Composite	0.92	0.87	0.95

All Cronbach's α values were greater than the 0.70 threshold considered internally consistent

DI disease impact subscale score, PI psychosocial impact subscale score, TS total score