Class Notes (1,200,000)
CA (650,000)
UTSC (30,000)
HLTB15H3 (100)
Lecture 7

HLTB15H3 Lecture Notes - Lecture 7: Clinical Trial

Health Studies
Course Code
Caroline Barakat

This preview shows page 1. to view the full 4 pages of the document.
Lecture 7 Undertaking Research: Sampling Methods
The Concept of Sampling
Selecting a few from a bigger group
Advantages: saves financial and human resources
Disadvantages: estimation or prediction possibility of error!
Sampling in Qualitative Research
Saturation point that is, keep going as long as one keeps discovering new
Keep in mind saturation point is a subjective judgement
Sampling Terminology
Population / study sample (N)
Sample size (n)
Sampling design / strategy
Sampling unit / sampling element
Sampling frame
Sample statistics
Population parameters or population mean
Objective: to examine the incidence of childhood obesity in school-aged children
in Canada
Population / study sample (N) all children between the age of 5 and 11 years
Sample x number of children selected from the study sample
Sample size n = 2000
Sampling design / strategy random, stratified.....
Sampling unit / sampling element if a multi-stage sample, then could be schools, grades
selected, and individuals
Sampling frame a list of schools, grades, students
Sample statistics data related to who is obese or not
Population parameters or population mean can only be obtained if all children aged 5 -11
You're Reading a Preview

Unlock to view full version