Assumptions about unmeasured confounders remain the fundamental flaw of observational studies. More complete empirical evaluations comparing observational methods in different situations are needed

Klungel OH; Martens EP; Psaty BM; Grobbee DE; Sullivan SD; Stricker BH; Leufkens HG; de Boer A

Assumptions about unmeasured confounders remain the fundamental flaw of observational studies. More complete empirical evaluations comparing observational methods in different situations are needed

Klungel OH, Martens EP, Psaty BM +5 more2004Methods to assess intended effects of drug treatment in observational studies are reviewed. J Clin Epidemiol

Summary

No abstract is available for this paper. It was published in Methods to assess intended effects of drug treatment in observational studies are reviewed. J Clin Epidemiol in 2004 by Klungel OH and colleagues.

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