Table 5.

Characteristics of the NARQoL-21 scales in the study sample

	Patient group n = 79 (mean age 14 yrs)				Control group n = 79 (mean age 12 yrs)	Total sample n = 158
Scale (no. of items)	Mean (SD)	% floor	% ceiling	alpha	Mean (SD)	alpha
HrQoL (21)	58.2 (16.3)	0	0	0.886	88.1 (9.8)	0.938
Psychosocial (15)	55.9 (15.8)	0	0	0.839	86.8 (11.1)	0.916
Future outlook (6)	64.0 (21.8)	0	2	0.776	91.1 (9.0)	0.832
Emotional reaction (5)	58.3 (22.7)	0	0	0.826	85.3 (13.5)	0.861
Social confidence (4)	66.8 (19.7)	0	4	0.638	83.4 (16.0)	0.695
School/Concentration (6)	46.8 (20.1)	0	0	0.761	90.4 (9.8)	0.888
Expectations (3)	55.8 (25.0)	0	6	0.786	87.5 (13.6)	0.837
Limitations (3)	72.3 (24.9)	1	18	0.629	94.8 (10.0)	0.669