Table.

Factors associated with awareness of, and disagreement with, unlinked anonymous testing of blood for HIV^*

	Awareness (n=1817)			Disagreement (n=1811)
	No (%) of people	Odds ratio (95% CI)		No (%) of people	Odds ratio (95% CI)
Age
16-24	39 (14)	1.00		85 (31)	1.00
25-44	248 (39)	3.33 (2.1 to 5.4)		188 (30)	0.98 (0.6 to 1.5)
45-54	127 (40)	3.54 (2.1 to 6.0)		83 (26)	0.78 (0.5 to 1.3)
55-64	80 (35)	2.88 (1.7 to 5.0)		54 (23)	0.66 (0.4 to 1.1)
65-74	48 (24)	2.19 (1.2 to 4.1)		43 (21)	0.43 (0.2 to 0.8)
⩾75	28 (19)	1.66 (0.9 to 3.2)		25 (17)	0.34 (0.2 to 0.7)
	F(5,1816)=6.47; P<0.001			F(5,1806)=3.49; P=0.004
Age left full time education
⩽14	49 (19)	1.00		59 (24)	1.00
15-18	360 (33)	1.52 (1.0 to 2.4)		302 (28)	0.63 (0.4 to 1.0)
19-25	113 (40)	2.15 (1.3 to 3.6)		61 (22)	0.43 (0.2 to 0.8)
>25	37 (44)	2.17 (1.2 to 4.1)		22 (26)	0.63 (0.3 to 1.3)
Still in education	12 (12)	1.06 (0.3 to 3.2)		33 (34)	0.72 (0.3 to 1.7)
No education	2 (27)	2.35 (0.2 to 3.4)		0	—
	F(5,1816)=2.52; P=0.03			F(4,1806)=2.26; P=0.06
Region
North of England	159 (31)	1.00		131 (25)	1.00
Midlands	155 (33)	1.07 (0.8 to 1.4)		147 (32)	1.43 (1.0 to 2.0)
London	53 (30)	0.87 (0.6 to 1.3)		45 (26)	1.06 (0.7 to 1.6)
South east England	73 (32)	0.99 (0.7 to 1.4)		42 (19)	0.73 (0.5 to 1.1)
South west England	43 (23)	0.62 (0.4 to 0.9)		52 (29)	1.25 (0.8 to 1.9)
Wales	41 (41)	1.62 (1.0 to 2.7)		27 (27)	1.09 (0.6 to 1.9)
Scotland	48 (31)	0.91 (0.6 to 1.4)		32 (20)	0.75 (0.5 to 1.2)
	F(6,1816)=2.04; P=0.06			F(6,1806)=2.50; P=0.02

^*All counts, percentages, and odds ratios are weighted to correct for unequal probability of selection. F statistics and P values refer to tests for heterogeneity of adjusted odds ratios.