Table 4. Descriptive and test–retest statistics for the 8 subscales of the Vasculitis Self-Management Scale at times 1 and 2^*.

	Time 1			Time 2			Test–retest statistics
	n	Mean ± SD	α	n	Mean ± SD	α	Mean ± SD difference	Pearson’s r	ICC (3,1)
Medication adherence	191	4.5 ± 0.54	0.77	43	4.6 ± 0.52	0.87	0.06 ± 0.44	0.60†	0.61
Health services adherence	202	4.6 ± 0.63	0.78	44	4.6 ± 0.58	0.73	−0.01 ± 0.51	0.56†	0.54
Infection avoidance adherence	142	3.7 ± 0.79	0.85	33	3.9 ± 0.73	0.84	0.22 ± 0.54‡	0.67†	0.69
Diet adherence	154	3.6 ± 0.76	0.76	34	3.6 ± 0.73	0.71	−0.16 ± 0.59	0.65†	0.60
Exercise adherence	125	3.2 ± 1.02	0.94	29	2.8 ± 0.94	0.96	−0.22 ± 0.67	0.79†	0.75
Symptom monitoring adherence	133	3.8 ± 0.97	0.91	29	3.5 ± 1.07	0.94	−0.20 ± 0.92	0.68†	0.63
Reporting symptoms and side effects	177	3.2 ± 1.08	0.90	40	3.1 ± 1.02	0.86	−0.11 ± 0.70	0.76†	0.76
Adjusting activities	185	3.4 ± 0.64	0.67	40	3.5 ± 0.62	0.71	0.10 ± 0.42	0.77†	0.76

^*ICC = intraclass correlation coefficient.

^†P < 0.001.

^‡P < 0.05.