FIGURE 2.

Quality assessment of the included studies. (A) Was a well-defined question posed in an answerable form? (B) Was a comprehensive description of the competing alternatives given? (C) Was the effectiveness of the programs or services established? (D) Were all the important and relevant costs and consequences for each alternative identified? (E) Were costs and consequences measured accurately in appropriate physical units? (F) Were costs and consequences valued credibly? (G) Were costs and consequences adjusted for differential timing? (H) Was an incremental analysis of costs and consequences of alternatives performed? (I) Was allowance made for uncertainty in the estimates of costs and consequences? (J) Did the presentation and discussion of study results include all issues of concern to the users?