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The authors performed a meta-analysis to derive pooled utilities for HIV/AIDS and to assess the relative importance of study design characteristics in predicting utilities. Twenty-five articles were identified reporting 74 unique utilities elicited from 1956 respondents. The authors used a hierarchical linear model to perform the meta-analysis, with disease stage, elicitation method, respondent type, and the upper-bound and lower-bound labels for the utility scale as the independent variables. Disease stage (P = 0.016) and respondent type (P = 0.014) were significant predictors of utility. Elicitation method was of marginal significance (P = 0. 052). Bounds were not significant. Pooling utilities, the authors estimate a utility of 0.70 for AIDS, 0.82 for symptomatic HIV and 0.94 for asymptomatic HIV when the time tradeoff method is used to elicit utilities from patients and the scale ranges from death to perfect health. The pooled utilities reported here should be of great use to researchers performing cost-utility analyses of interventions for HIV/AIDS.
Tengs et al. (Sun,) studied this question.