Table 1.

Recruitment efficiency and recruitment costs

Practice ID	Database screened	Eligible	Randomised	Recruitment efficiencya	Staff time per patient randomised (hours)	Cost per randomised patient ($)
1	20	15	14	1.43	2.29	167
2	86	64	8	10.75	5	366
3	26	16	16	1.63	4	276
4	31	14	6	5.17	6.5	435
5	113	54	21	5.38	2.48	188
6	123	100	17	7.24	2.76	220
7	22	7	2	11	11	797
8	96	23	10	9.6	3.3	213
9	31	25	9	3.44	1.11	74
10	116	54	22	5.27	3.09	254
11	98	59	8	12.25	4.38	307
12	32	17	16	2	1.75	144
13	66	34	5	13.2	8.4	574
14	98	55	16	6.13	2.63	179
15	15	12	2	7.5	2.5	181
16	49	17	7	7	7.14	472
17	168	121	21	8	0.62	127
18	17	6	2	8.5	4.5	330
19	169	106	30	5.63	1.4	132
20	75	39	6	12.5	5.33	357
21	44	26	12	3.67	2.33	179
22	164	116	28	5.86	2.07	147
23	117	39	8	14.63	3.25	234
24	73	45	7	10.43	3.71	269
25	119	93	6	19.83	5	314
Mean (SD)	78.7 (49.4)	46.3 (35.6)	12 (7.9)	7.9 (4.4)	3.9 (2.4)	277(160.6)

^aCalculated as participants screened/participants randomised