Results 251 to 260 of about 1,037,282 (261)
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Quality assessment of observational studies is not commonplace in systematic reviews
Journal of Clinical Epidemiology, 2006Christian D Mallen +2 more
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Amplification of Sensitivity Analysis in Matched Observational Studies
Journal of the American Statistical Association, 2009Paul R Rosenbaum, Jeffrey H Silber
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Observational data collection methods for services marketing: An overview
Journal of the Academy of Marketing Science, 1992Stephen J Grove, Raymond P Fisk
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Importance of Observational Studies in Clinical Practice
Clinical Therapeutics, 2007Robert J Ligthelm +2 more
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