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Avoiding Bias in Observational Studies: Part 8 in a Series of Articles on Evaluation of Scientific Publications
BACKGROUND: Many questions in human health research can only be answered with observational studies. In contrast to controlled experiments or well-planned, experimental randomized clinical trials, observational studies are subject to a number of potential problems that may bias their results. METHOD...
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| Hauptverfasser: | , , |
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| Format: | Artigo |
| Sprache: | Inglês |
| Veröffentlicht: |
Deutscher Arzte Verlag
2009
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| Schlagworte: | |
| Online Zugang: | https://ncbi.nlm.nih.gov/pmc/articles/PMC2780010/ https://ncbi.nlm.nih.gov/pubmed/19946431 https://ncbi.nlm.nih.govhttp://dx.doi.org/10.3238/arztebl.2009.0664 |
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