Association of trial registration with the results and conclusions of published trials of new oncology drugs.

Statistical Significance of Primary Outcome For each report, the results described for the primary efficacy outcome were categorised as 1) favorable if the result was statistically significant (p < 0.05 unless more stringent criteria were specified) and in the direction of the test drug being more efficacious, or 2) inconclusive if the result did not reach statistical significance, or 3) unfavorable if the result was statistically significant in the direction of the comparator treatment being more efficacious.

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