Table 4.

Percentage of negative intraclass correlation estimates in simulated data.

ICC
	−.001				.001				.05				.10
m	k = 5	k = 10	k = 20	k = 40	k = 5	k = 10	k = 20	k = 40	k = 5	k = 10	k = 20	k = 40	k = 5	k = 10	k = 20	k = 40
2	51	50	52	49	51	50	52	48	46	45	44	36	43	39	36	26
4	57	56	55	53	57	55	54	52	48	43	33	25	40	32	20	09
8	61	58	55	54	60	57	53	51	44	29	19	09	31	15	06	01
16	61	57	56	55	59	54	52	50	29	17	06	01	16	05	01	00
32	62	60	57	59	58	55	50	48	18	06	01	00	07	01	00	00
64	63	62	62	63	56	51	48	41	08	01	00	00	03	00	00	00
128	66	67	69	74	52	47	40	31	03	00	00	00	01	00	00	00
256	76	80	84	92	48	38	29	18	01	00	00	00	00	00	00	00

Note. m = patients per therapist; k = therapists; ICC = intraclass correlation