![]() ![]() 51 note that disease which comes first alphabetically is on top), can use the following: ○ Vertical → Sensitivity/specificity formulas vagina is VERTICAL slit the vagina is SENSITIVE ○ Horizontal → PPV/NPV formulas ○ The good value (TP, TN) always goes on top of the ratio, as we want these numbers to be high Incidence is new incidents over a time period, whereas prevalence is just the percentage of the population with the disease at a given time Positive and negative skew If can create 2X2 disease/test table (FA 2011 P.SNOUT = SeNsitivity rules OUT SPIN = SPecificty rules IN. ![]() Mnemonics%20and%20Study%20Tips%20for%20Medical%20Students%20-%202nd%2 0edition.pdfĬase control (odds ratio) is in past, cohort study is in future (relative risk) → Odds ratio comes before relative risk alphabetically Evaluation of diagnostic tests ![]()
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