Table 2.

Test–retest reliability of the Diabetes Health Profile-18 subdimensions overall, and considering a reported change in global assessment of health

Global assessment of health	N	Baseline, mean (sd)	Retest, mean (sd)	Mean differences (sd)	ES	Minimally important difference			SDCind	SDCgru	ICC (95%CI)
						0.2SD	0.5SD	1SEM
PD
Stayed the same	39	22.4 (16.3)	21.5 (13.7)	0.8 (11.9)	0.05	3.27	8.17	8.43	23.37	2.65	0.69 (0.48–0.83)
Worse	15	28.9 (17.7)	26.3 (17.5)	2.6 (10.9)	0.14	3.54	8.86	7.70	21.33	3.89	0.81 (0.53–0.93)
Better	21	33.9 (23.2)	31.7 (24.8)	2.1 (20.6)	0.09	4.65	11.61	14.56	40.37	6.23	0.64 (0.30–0.84)
Total	75	26.9 (19.2)	25.3 (18.5)	1.5 (14.5)	0.08	3.84	9.59	10.26	28.45	2.32	0.70 (0.57–0.80)
BA
Stayed the same	39	35.2 (15.7)	37.8 (20.4)	− 2.6 (17.6)	0.17	3.14	7.84	10.01	27.75	2.59	0.66 (0.50–0.79)
Worse	15	49.3 (13.2)	56.7 (19.2)	− 7.4 (19.3)	0.56	2.63	6.58	11.38	31.55	4.81	0.22 (− 0.06,0.58)
Better	21	40.1 (20.1)	43.5 (24.3)	− 3.4 (20.1)	0.17	4.01	10.03	11.60	32.16	4.05	0.71 (0.51,0.86)
Total	75	39.4 (17.2)	43.2 (22.3)	− 3.8 (18.3)	0.22	3.45	8.61	12.67	29.57	1.99	0.67 (0.56–0.77)
DE
Stayed the same	39	30.0 (19.0)	32.1 (21.1)	− 2.1 (19.9)	0.11	3.80	9.51	11.70	32.42	3.04	0.66 (0.50–0.80)
Worse	15	41.8 (18.6)	37.3 (20.4)	4.4 (13.9)	0.24	3.72	9.3	8.06	22.33	3.33	0.82 (0.64–0.93)
Better	21	40.3 (20.4)	39.4 (25.1)	0.9 (18.6)	0.05	4.08	10.19	10.76	29.85	3.76	0.77 (0.59–0.89)
Total	75	35.3 (19.8)	35.2 (22.1)	0.1 (18.5)	0.003	3.97	9.92	10.74	29.78	2.00	0.73 (0.64–0.81)

PD Psychological distress, BA Barriers to activity, DE Disinhibited eating, ES effect size, SD standard deviation, SEM standard error of measurement, SDC small detectable change, ICC intraclass correlation coefficient