Table 2.

Reliability of the 21-item A-RHDQoL (N/A responses coded as zero)

A-RHDQoL domain	Scale mean if item deleted	Scale variance if item deleted	Corrected item-total correlation	Alpha if item deleted
1. Family life*	21.86	1.13	0.68	.9310
2. Social life	21.89	1.15	0.62	.9322
3. Work*	21.92	1.21	0.36	.9359
4. Health	21.85	1.13	0.72	.9304
5. Physical appearance	21.86	1.17	0.55	.9332
6. Physical capabilities	21.81	1.13	0.74	.9301
7. Physical stamina	21.81	1.15	0.63	.9320
8. Energy	21.80	1.14	0.70	.9309
9. Sex life*	21.82	1.14	0.53	.9342
10. Sleep	21.88	1.16	0.43	.9364
11. Bodily pain*	21.91	1.19	0.45	.9348
12. Stress-tolerance	21.88	1.13	0.64	.9318
13. Memory	21.81	1.11	0.69	.9308
14. Concentration	21.83	1.11	0.76	.9295
15. Travel	21.89	1.15	0.69	.9312
16. Holidays & leisure	21.87	1.13	0.67	.9312
17. Household tasks	21.88	1.14	0.64	.9317
18. Confidence	21.87	1.13	0.72	.9303
19. Motivation	21.87	1.13	0.70	.9306
20. Society's reaction	21.90	1.18	0.50	.9341
21. Worry about future	21.90	1.16	0.56	.9332

Cronbach's alpha for 21-item A-RHDQoL = 0.935, (N = 103). Standardized item alpha = 0.936.