Choosing the sampling design for selecting study subjects from
the accessible population
Consecutive sample
Often the best option
Simple random sample
(To reduce the number in the
Sample if a consecutive sample
Would be too large)
Stratified random sample
(To increase the size of
specified subgroups
in the sample)
Cluster random sample
(To draw an inexpensive
but representative sample from
a large population that is widely
Spread or difficult to enumerate)
Convenience sample
Judgmental sample
(To draw an easy, inexpensive
sample when almost any sample
will be representative)
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