Evaluation of an educational intervention to increase HIV-testing in high HIV prevalence general practices: a pilot feasibility stepped-wedged randomised controlled trial

Table 1 Randomised comparison between intervention and control practices. Number of HIV tests, annual rate of HIV testing per 1000 patients, and difference in rate by practice and randomisation arm and overall, and number of positive tests. Data for 6 months pre and post intervention for intervention practices, and for corresponding time periods (both pre-intervention) for the control practices

		Randomised comparison
	Total population	No. of HIV tests		Annual rate of HIV tests per 1000 patients
		Pre	Post	Pre	Post	Difference
Intervention practices		−6,-1	1,6	−6,-1	1,6	post-pre
1	5547	99	90	35.7	32.4	−3.2 (−13.0, 6.5)
2	6295	112	122	35.6	38.8	3.2 (−6.3, 12.7)
3	12,794	103	105	16.1	16.4	0.3 (−4.1, 4.7)
4	8506	52	44	12.2	10.3	−1.9 (−6.4, 2.6)
5	7206	40	47	11.1	13.0	1.9 (−3.1, 7.0)
6	7203	48	57	13.3	15.8	2.5 (−3.1, 8.1)
7	6304	60	67	19.0	21.3	2.2 (−4.8, 9.2)
8	5496	15	21	5.5	7.6	2.2 (−2.1, 6.5)
9	6710	45	78	13.4	23.2	9.8 (3.4, 16.3)
Mean difference n = 9						1.9 (−0.5, 4.3)
TOTAL intervention	66,061	574	631	17.4	19.1	1.7 (− 0.3, 3.8)
Positive tests		3	3
		Pre 1	Pre 2	Pre 1	Pre 2	Difference
Control practices		−12,-7	−6, −1	−12,-7	−6, −1	Pre2-Pre1
10	9081	36	36	7.9	7.9	0.0 (−3.7, 3.7)
11	4133	16	22	7.7	10.6	2.9 (−2.9, 8.8)
12	10,833	63	76	11.6	14.0	2.4 (−1.9, 6.7)
13	14,547	149	159	20.5	21.9	1.4 (−3.4, 6.1)
14	2878	38	41	26.4	28.5	2.1 (−10.0, 14.2)
15	4711	18	27	7.6	11.5	3.8 (−1.8, 9.4)
16	12,456	108	115	17.3	18.5	1.1 (−3.6, 5.8)
17	6945	92	132	26.5	38.0	11.5 (3.1, 20.0)
18	3334	16	18	9.6	10.8	1.2 (−5.7, 8.1)
19	6960	44	42	12.6	12.1	−0.6 (−5.8, 4.6)
Mean difference n = 10						2.6 (0.5, 4.7)
TOTAL control	75,878	580	668	15.3	17.6	2.3 (0.5, 4.1)
Positive tests		7	2
All practices
Mean difference n = 19						2.3(0.7, 3.8)
TOTAL all (pooled)	141,939	1154	1299	16.3	18.3	2.0 (0.7, 3.4)
TOTAL positive tests		10	5

ISSN: 2731-4553