Table 1. Staff levels and slides read in the 12 study laboratories.

Hospital	Lab staff	Technician*	Assistant†	Attendant‡	Slide readers§	Total slides read, 2009	% positive
1	11	1	7	3	9	16 997	68%
2	5	1	2	2	5	7597	33%
3	10	1	5	4	10	35 571	62%
4	16	3	5	8	5	13 995	50%
5	4	0	2	2	2	10 355	2%
6	7	2	4	1	6	6031	23%
7	10	1	5	4	6	13 241	20%
8	5	2	1	2	4	6127	13%
9	3	1		1	2	6978	13%
10	6	2	1	3	6	6165	0%
11	5	2	2	1	4	3800	9%
12	6	1	2	3	6	3240	10%

Notes: *Laboratory technicians are senior staff with 3 years of training.

†Laboratory assistants are middle-grade staff with 2 years of training.

‡Laboratory attendants have 6 months of training and are not qualified for slide reading.

§Slide reader defined as staff who were reported to read slides on at least 3 days per working week.