POPM 3240 Lecture Notes - Lecture 5: Nonprobability Sampling, Sampling Frame, Cluster Sampling

• School: University of Guelph
• Department: Population Medicine
• Course: POPM 3240
• Professor: Cathy Bauman

Document Summary

Inclusion criteria: set of characteristics a potential study subject must have in order to be included in the study ! Exclusion criteria: set of characteristics that if possessed, will result in a potential study subject being excluded from the study ! Target population: population to which it might be possible to extrapolate results ! Source population: population from which the study subjects are drawn ! Sampling frame: list of all study subjects in the source population ! Sampling units: actual unit of measurement i. e. person, household, farm! Study/sampled population: group of sampling units (sample) that was actually selected from the sampling frame i. e. sample 20 people from each 10 reserves in ontario! > how well do the study results relate to the source population? ! External validity: degree to which inferences drawn from a study can be generalized or extrapolated to the broader population of interest !