Table 3.

Table displaying the total number of studies which met each criterion of the Drummond checklist

Drummond Criterion	Summary of criterion	Total studies meeting criterion n = 46 (%)		Total studies not meeting criterion n = 46 (%)		Total studies to which criterion is not applicable n = 46 (%)
1	Was a well-defined question posed in answerable form?	26	(57)	20	(43)	0	(0)
2	Was a comprehensive description of the of the competing alternatives given?	21	(46)	25	(54)	0	(0)
3	Was there evidence that the programme’s effectiveness had been established?	27	(59)	19	(41)	0	(0)
4	Were all the important and relevant outcomes and costs for each alternative identified?	14	(30)	32	(70)	0	(0)
5a	Were outcomes measured accurately in appropriate units prior to evaluation?	31	(67)	15	(33)	0	(0)
5b	Were costs measured accurately in appropriate units prior to evaluation?	12	(26)	34	(74)	0	(0)
6a	Were the outcomes valued credibly?	12	(26)	34	(74)	0	(0)
6b	Were the costs valued credibly?	12	(26)	34	(74)	0	(0)
7a	Were outcomes adjusted for different times at which they occurred?	13	(28)	33	(72)	1	(2)
7b	Were costs adjusted for different times at which they occurred?	29	(63)	17	(37)	1	(2)
8	Was an incremental analysis of the outcomes and costs of alternatives performed?	28	(61)	18	(39)	0	(0)
9	Was allowance made for uncertainty in the estimates of costs and consequences?	32	(70)	14	(30)	0	(0)
10	Did the presentation and discussion of study results include all of the issues that are of concern to users?	30	(65)	16	(35)	0	(0)