Table 1.

Summary of retesting study participants (age, gender and area): with number and percentage retested and rediagnosed in Cornwall, Bristol and Dorset, England, August 2012–July 2013

Area	Gender	Age	N	N retested	Percentage retested	Confirmed result	Positive	Percentage positive
Bristol	Female	15–19	79	32	40.5	31	4	12.9
		20–25	167	74	44.3	73	7	9.6
		Subtotal (gender)	246	106	43.1	104	11	10.6%
	Male	15–19	14	2	14.3	2	0	0.0
		20–25	86	22	25.6	20	2	10.0
		Subtotal (gender)	100	24	24.0	22	2	9.1
	Subtotal (area)		346	130	37.6	126	13	10.3
Cornwall	Female	15–19	53	24	45.3	24	1	4.2
		20–25	142	60	42.3	60	9	15.0
		Subtotal (gender)	195	84	43.1	84	10	11.9
	Male	15–19	7	1	14.3	1	0	0.0
		20–25	50	7	14.0	7	1	14.3
		Subtotal (gender)	57	8	14.0	8	1	12.5
	Subtotal (area)		252	92	36.5	92	11	12.0
Dorset	Female	15–19	37	24	64.9	24	2	8.3
		20–25	57	29	50.9	29	2	6.9
		Subtotal (gender)	94	53	56.4	53	4	7.5
	Male	15–19	23	7	30.4	7	1	14.3
		20–25	63	21	33.3	21	2	9.5
		Subtotal (gender)	86	28	32.6	28	3	10.7
	Subtotal (area)		180	81	45.0	81	7	8.6
Total	Female	15–19	169	80	47.3	79	7	8.9
		20–25	366	163	44.5	162	18	11.1
		Subtotal (gender)	535	243	45.4	241	25	10.4
	Male	15–19	44	10	22.7	10	1	10.0
		20–25	199	50	25.1	48	5	10.4
		Subtotal (gender)	243	60	24.7	58	6	10.3
			778	303	38.9	299	31	10.4