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NBME 24 Answers

nbme24/Block 3/Question#50 (21.9 difficulty score)
A group of physicians submits a report to a ...
Case series🔍
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 +2  upvote downvote
submitted by m-ice(271),
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sCae sesier is a sudty ni wchhi teh hrcsresreea reptsen the hoiyrts nad tttrenema fo a mllas orupg of imaslri tesn,aipt tohiuwt cibnisredg nya ogntisr into rsogpu ro moa.rziinadton

drmomo  only 3 patients +1  
usmile1  uggghhh not in FA ... +  



Why not clinical trial? They could report a rare adverse effect in phase 4 clinical trial right?

sunshinesweetheart  there's no control group. it's just a case study. x3 +2  
sunshinesweetheart  plus clinical trials at that stage would have had tons and tons of participants (and, most importantly to rule out all the answers, control group) +  
servage  I totally thought it was phase 4 of a clinical trial as part of post-market surveillance. Smh. +  
loaloagubba  For phase 4 they report to the said findinds and adverse to the FDA via a portal not to a journal. +  



 +0  upvote downvote
submitted by overa(1),

Case-series: comparing patients with a KNOWN OUTCOME (disease) to others with the same disease and looking back to see if they were exposed... "Did 2 people with the same disease get it from the same place?"

Case-control: comparing patients with a KNOWN OUTCOME (disease) to others WITHOUT (control) the disease and looking back to see if they were exposed. (odds ratio)... "they are sick and you want to see if drinking the contaminated water caused it by comparing them to normal people."

Cohort: Comparing patients with a KNOWN EXPOSURE and moving forward with them (prospective) or looking back in time (retrospective) to see if they developed the outcome (disease). (relative risk)... "they all drank the contaminated water and you want to see if they are more likely to get the disease."

Correlation is a statistical analysis used when both the dependent and independent variables have quantitative measurement values.

I hope this is right and helps... :)