NR 503 Week One – Definitions Epidemiology Disease surveillance – Endemic – Epidemic – Pandemic Common vehicle Morbidity Mortality Risk Incidence Prevalence Mortality rates Case-fatality rates Primary Secondary Tertiary prevention NR 503 Week Two – Definitions Validity Sensitivity Specificity Positive predictive value Negative predictive value Magnitude False Negative Secondary prevention Natural history of disease True positive NR 503 Week Three – Definitions Relative risk Odds rati...