RANDOMIZED AND NON-RANDOMIZED PATIENTS I
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CLAUDIA SCHMOOR; MANFRED OLSCHEWSKI; MARTIN SCHUMACHER
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Article
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1996
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John Wiley and Sons
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English
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In clinical research, randomized trials are widely accepted as the definitive method of evaluating the efficacy of therapies. Random assignment of patients to treatment ensures internal validity of the comparison of new treatments with controls. An assessment of external validity can best be achieve