In being one of the lowest scoring sports in the world, low sample size of success (at least if measured by goals) and the apparent randomness with which it comes makes analysis of the sport perhaps the most difficult of those discussed within conference panels.

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Although the findings of the studies are mostly consistent in showing a similar magnitude hazard ratio, estimates of the effectiveness of sipuleucel-T are imprecise due to the relatively small total sample size of the clinical trials, and unmeasurable biases due to potential confounding effects of frozen salvage product and post-progression treatments.

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Jaime Gahche, main author of the CDC report, and her co-authors analyzed responses from a sample size of 37, 596, using National Health and Nutrition Examination surveys.

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