Epidemiology — Flashcards

_____ = # of existing cases / total # of people in a population at a point in time

When raising the cutoff point for a disease, the _____ and PPV will increase

Migration (attrition) bias is a form of _____ that occurs when patients drop out of the study prematurely

The Mortality Rate = (_____) / (total population time at risk during T0->T1)

The _____ rate of a test is equal to 1 - sensitivity

Procedure bias is an error introduced in _____ that results from different groups being treated differently

_____ predictive value varies directly with pretest probability / prevalence

Inflammatory bowel disease is more prevalent in the West, particularly in _____ and Eastern European Jews

Selection bias is an error introduced in _____ that occurs due to a nonrandom sampling or treatment allocation of subjects

Measurement bias can be reduced by:- using a _____ group - using objective and standardized methods of data collection