Table 2

Logistic regression of retesting probability, with unadjusted and adjusted ORs (by area of study, gender and age group)

				Unadjusted				Adjusted
	N (778)	Retested (243)	Percentage retested	OR	CI		p Value	OR	CI		p Value
	N (778)	Retested (243)	Percentage retested	OR	Lower 95%	Upper 95%	p Value	OR	Lower 95%	Upper 95%	p Value
Area
Bristol	346	130	38	Ref				Ref
Cornwall	252	92	37	0.96	0.68	1.34	0.79	0.9	0.64	1.26	0.534
Dorset	180	81	45	1.36	0.94	1.96	0.1	1.69	1.15	2.49	0.008
Gender
Male	243	60	25	Ref				Ref
Female	535	243	45	2.5	1.81	3.56	<0.001	2.87	2.01	4.1	<0.001
Age
15–19	213	90	42	Ref				Ref
20–25	565	213	38	0.83	0.6	1.14	0.246	0.99	0.71	1.38	0.95