Table 4.

Test-retest reliability (Spearman Rank Correlation Coefficient).

		test		retest
MDI item No	Description of item	mean	sd	mean	sd	p	rho
1	Have you felt low on spirits or sad?	2.73	1.91	2.47	1.88	0.703	0.90
2	Have you lost interest in your daily activities?	2.33	1.80	1.87	1.77	0.480	0.86
3	Have you felt lacking in energy and strength?	2.00	1.73	1.67	1.88	0.617	0.86
4	Have you felt less self-confident?	1.93	1.87	1.53	1.92	0.568	0.86
5	Have you had a bad conscience or feelings of guilt?	0.40	0.91	0.53	0.99	0.704	0.88
6	Have you felt that life wasn't worth living?	0.33	0.82	0.40	0.83	0.826	0.86
7	Have you had difficulty in concentratin g, e.g. when reading the newspaper or watching television?	1.20	1.37	1.33	1.54	0.804	0.53
8A	Have you felt very restless?	1.87	1.81	1.87	1.81	>0.9	0.96
8B	Have you felt subdued?	1.60	1.76	1.53	1.88	>0.9	0.84
9	Have you had trouble sleeping at night?	1.13	1.60	1.20	1.66	>0.9	0.85
10A	Have you suffered from reduced appetite?	1.40	1.88	1.73	1.87	0.630	0.86
10B	Have you suffered from increased appetite?	1.00	1.41	0.87	1.13	0.777	0.81
MDI total score		17.93	13.82	17.00	15.42	0.863	0.91