PubMed · 16141034
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Jocelyn Kaiser. 2005-09-02. Bioethics. Final NIH rules ease stock limits.. https://doi.org/10.1126/science.309.5740.1469
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OBJECTIVE: To investigate if published studies tend to report favourable cost effectiveness ratios (below 20,000 dollars, 50,000 dollars, and 100,000 dollars per quality adjusted life year (QALY) gained) and evaluate study characteristics associated with this phenomenon. DESIGN: Systematic review. Studies reviewed 494 English language studies measuring health effects in QALYs published up to December 2001 identified using Medline, HealthSTAR, CancerLit, Current Content, and EconLit databases. MAIN OUTCOME MEASURES: Incremental cost effectiveness ratios measured in dollars set to the year of publication. RESULTS: Approximately half the reported incremental cost effectiveness ratios (712 of 1433) were below 20,000 dollars/QALY. Studies funded by industry were more likely to report cost effectiveness ratios below 20,000 dollars/QALY (adjusted odds ratio 2.1, 95% confidence interval 1.3 to 3.3), 50,000 dollars/QALY (3.2, 1.8 to 5.7), and 100,000 dollars/QALY (3.3, 1.6 to 6.8). Studies of higher methodological quality (adjusted odds ratio 0.58, 0.37 to 0.91) and those conducted in Europe (0.59, 0.33 to 1.1) and the United States (0.44, 0.26 to 0.76) rather than elsewhere were less likely to report ratios below 20,000 dollars/QALY. CONCLUSION: Most published analyses report favourable incremental cost effectiveness ratios. Studies funded by industry were more likely to report ratios below the three thresholds. Studies of higher methodological quality and those conducted in Europe and the US rather than elsewhere were less likely to report ratios below 20,000 dollars/QALY.
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