4. CONFIDENCE INTERVALS

cristian velez
Mind Map by , created over 5 years ago

EPIDEMIOLOGY Mind Map on 4. CONFIDENCE INTERVALS, created by cristian velez on 03/23/2014.

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cristian velez
Created by cristian velez over 5 years ago
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4. CONFIDENCE INTERVALS
1 DOES NOT equals probability
1.1 statistical significance: with large sample, clinical relevance studies can also be good too
2 FOR 95% =1.96 for 99%=2.575 for 90%=1.645
2.1 P-VALUE: probability that tells you whether the study results are consistent with being due to chance. BUT: *does not tell if the study result was due to chance. *do not clear up about direction-difference or measure between groups
2.1.1 Note: A null hypothesis is the default position in a study (“there is no association between the exposure and the health outcome.”) A null hypothesis cannot be "accepted" or "proved true.", instead: "reject the null hypothesis" "fail to reject the null hypothesis"
2.1.2 REMEMBER: RATIO NULL VALUE= 1 DIFFERENCE NULL VALUE= 0
2.2 if you conducted the study 100 times, approximately 95% of those times the true value would be contained between the interval of 1.9 and 4.1.