godfather1212m
Forum Senior
Topics: 23
Posts: 187
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Can anybody clarify to me what is difference between confounding bias and effect modification?
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WE MIGHT HAVE COME FROM DIFFERENT PLACES, BUT WE ARE HEADING IN THE SAME DIRECTION
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| new_n_lost
Politically InCorrect
Topics: 653
Posts: 6,078
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Damn i have no idea abt it but i will be looking into it.
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FORUM RULES-- Those who believe in telekinesis, raise my hand. I get enough exercise just by pushing my luck --P4U World.." The pure and simple truth is rarely pure and never simple."
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| hope4dabest
Forum Elite
Topics: 16
Posts: 433
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Confounding is when there is more than 1 factor that is responsible for the outcome, that is we have the outcome which is fine with us but this outcome is also due to some other factors ( SAY SOME OTHER HIDDEN FACTORS), BUT EVEN WITH THIS HIDDEN FACTOR, OUTCOME WILL BE SAME
and
effect modification is when we have the outcome but this outcome can be CHANGED with some other FACTOR( effect )
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| Rubravera
Forum Newbie
Topics: 3
Posts: 8
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CONFOUNDING is a type of bias.......it alters the result of study been undertaken....the factor being examined is linked with another factor which is known as confounding factor..........
EFFECT Modificatuion .......is not a bias..........it is a factor modifying the effect..... one cant do anything about it.
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| SmokyWaters
Forum Elite
Topics: 6
Posts: 458
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ACTUALLY THE DIFFERENCE BETWEEN THE TWO IS VERY NARROW...
AT SOME PLACES CONFOUNDING IS ALSO TAKEN AS AN EFFECT MODIFICATION
FOR THE PURPOSE OF USMLE
JUST REMEMBER THIS:
IF THE FACTOR/EFFECT IS ALREADY TOLD IN THE QUESTION AND IS BEING CONSIDERED IN THE STUDY THEN ITS EFFECT MODIFICATION
IF ITS NOT CONSIDERED IN THE STUDY AND ITS AFFECTING THE RESULTS.. ITS CONFOUNDING FACTOR
BETTER NOT GET INTO THE LOGICAL EXPLANATION OF BOTH...
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| Ig F
Forum Elite
Topics: 3
Posts: 439
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i hope this explanantion works in my exam.....
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i m not perfect but i wanna get close to it......
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| zubr
Forum Junior
Topics: 14
Posts: 61
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So, if we know the extra factor, this is an EFFERCT MOTIFICATION (and not a bias).
If we do not know exactly (just guess if the extra factors there = ALWAYS something there that we do not know) – CONFOUNDING (bias and need to do something).
SmokyWaters, Are you sure??
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