Epidemiology — Measures of Association & Impact
Epidemiological measures mapped to pharmacovigilance: relative risk (→PRR), odds ratio (→ROR), attributable risk, NNT/NNH, attributable fraction, population AF, incidence rate, prevalence, Kaplan-Meie
11 toolsepidemiology
Relative Risk
Compute relative risk RR = [a/(a+b)] / [c/(c+d)] with 95% CI. PV equivalent: PRR.
abcd
Odds Ratio
Compute odds ratio OR = (a*d)/(b*c) with 95% CI. PV equivalent: ROR.
abcd
Attributable Risk
Compute attributable risk AR = Ie - Io (risk difference) with 95% CI.
abcd
Nnt Nnh
Compute Number Needed to Treat (NNT) or Number Needed to Harm (NNH) = 1/|AR|.
abcd
Attributable Fraction
Compute attributable fraction AF = (RR-1)/RR among exposed.
abcd
Population Af
Compute population attributable fraction PAF = Pe(RR-1)/[1+Pe(RR-1)].
abcd
Incidence Rate
Compute incidence rate IR = events/person-time with Poisson CI.
eventsperson_time
Prevalence
Compute prevalence P = cases/population with Wilson CI.
casespopulation
Kaplan Meier
Kaplan-Meier product-limit survival estimator S(t) = Π[1 - d_i/n_i] with Greenwood SE.
intervals
Smr
Standardized Mortality/Morbidity Ratio SMR = observed/expected with Byar CI. PV equivalent: O/E ratio.
observedexpected
Pv Mappings
Reference table of all epidemiology-to-pharmacovigilance concept transfer mappings with confidence scores.
no params