• Greater rigor is needed in the use of observational methods; even the best methods used incorrectly will yield bad results. (Goodman) • No one method is infallible, multiple methods are needed to ...
CHICAGO -- A study comparing different statistical methods used to remove the effects of selection bias in observational studies finds that results may vary and caution may be warranted when ...
Protocol amendment for ENSEMBLE study: A multicenter, randomized, phase III trial to test the superiority of consolidation irinotecan, capecitabine and oxaliplatin vs capecitabine and oxaliplatin ...
• Accounting for bias is a major challenge confronting the use of observational data to gain important insights into real-world treatment effects. • No single study design will satisfy all information ...
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