CPH Practice Exam | 51 Questions With Verified Solutions
Public health laws approved by city or county boards must be approved by referendum Sensitivity true positive rate; proportion of positives correctly identified as such; A/A+C Specificity true negative rate; probability of testing negative if the disease is truly absent; D/B+D A confounding variable is associated with exposure; it can strengthen or weaken Rate data such as the number of events occurring in a specified period of time are often described by which probability distribution? The Poisson distribution is often used to describe count data and can be used to describe rate data by including an offset term for the denominator of the rate. The number of independent events needed for selecting the appropriate probability model is specified by the: Probability distributions are based on the number of independent events. Degrees of freedom (to vary) are used as the specification of the number of events that can vary. If we are predicting a parameter (which is a fixed value), only the number of events minus 1 can vary and t
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