*NURSING > QUESTIONS & ANSWERS > USMLE Step 1 Biostatistics-Epidemiology (Complete Solution) (All)
USMLE Step 1 Biostatistics-Epidemiology (Complete Solution)
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Sensitivity - TP / (TP + FN) Specificity - TN / (TN + TP) Positive Predictive Value - TP / (TP + FP) Negative Predictive Value - TN / (FN + TN) Incidence Rate - # of new cases in a certain time pe... riod / population that is at risk during that time period This looks at new incidences occurring during a time period Prevalence - # of existing cases / population at risk Looks at ALL current cases Odds Ratio - (a/c) / (b/d) OR ad / bc Relative Risk - [a / (a + b)] / [c / (c + d)] Attributable Risk - (a / (a+b) ) - (c / (c+d) ) Gaussian curve standard deviation %'s - +/- 1 SD = 68% +/- 2 SD = 95% [Show More]
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