sampling methods Flashcards
what are the 4 probability sampling methods
simple random sampling
systemic sampling
stratified random sampling
cluster random sampling
what is simple random sampling
lottery
what is systematic sampling
use of a sampling interval
what is stratified random sampling
structure population into known subsets and select randomly from each
what is cluster random sampling
divide population into clusters and sample from each cluster
what are the four non-probability sampling methods
convenience
quota
purposive
snowball
what is convenience sampling
sampling from a convenient group of people
what is quota sampling
quotas set on characteristics that must be met
what is snowball sampling
word of mouth
what are clinical outcome measures
measures of disease or condition
what are humanistic outcome measures
measures which are relevant to the patient
what are process outcome measures
measure of the process
what is a before and after study
same cohort of patients, primary outcome measured before and after
what is a controlled trial
two cohorts of patients, one given control and one intervention
what is a RTC
random allocation of people to two groups - one intervention and one control
