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Retired NBME Free 120 Answers

free120/Block 2/Question#22 (reveal difficulty score)
A placebo-controlled clinical trial is ...
Significant findings can be reported with greater confidence ๐Ÿ” / ๐Ÿ“บ / ๐ŸŒณ / ๐Ÿ“–
tags: biostats

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submitted by โˆ—bwdc(697)
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The alpha-value corresponds to the p-value we will accept as significant and reflects the likelihood of a type I error (a false positive). A lower alpha-value means a lower acceptable likelihood of obtaining the same results by chance, and thus, significant results can be reported more confidently (a 1% false positive rate instead of a 5% rate).

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submitted by anu(2)
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why is option D ) there is an increased likelihood of statistically significant findings... wrong ?

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micray  There is a decreased likelihood of statistically significant findings due to the much higher threshold (lower p-value). +5
drpee  The lower you make your p-value, the harder it will be to prove the relationship. That's why I always go with a p-value of .49 in my research. +2
lba9587  Because BOTH values are significant. PValue of Less than or equal to 0.05 is significant. +1



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submitted by โˆ—an1(114)
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Alpha (I Error) -- Confidence Interval

Beta (II Error) -- Power

Values have an inverse relationship with each other

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