Table 1

Specimens tested by year (male subjects only)

		Unknown positive		Known positive		Total positive
Year	Tested (n)	n	%	n	%	n	%
Glasgow Royal Infirmary
1992	6304	10	0.16	77	1.22	87	1.38
1993	6332	14	0.22	49	0.77	63	0.99
1994	6951	20	0.29	46	0.66	66	0.95
1995	6721	32	0.48	21	0.31	53	0.79
1996	6737	17	0.25	29	0.43	46	0.68
1997	7152	13	0.18	36	0.50	49	0.69
Total	40 197	106	0.26	258	0.64	364	0.91
Stobhill Hospital
1992	4356	4	0.09	2	0.05	6	0.14
1993	3084	2	0.06	1	0.03	3	0.10
1994	3411	2	0.06	0	0.00	2	0.06
1995	3261	3	0.09	2	0.06	5	0.15
1996	2504	3	0.12	0	0.00	3	0.12
1997	4258	2	0.05	2	0.05	4	0.09
Total	20 874	16	0.08	7	0.03	23	0.11