Definition: Studies in which a number of subjects are selected from all subjects in a defined population. Conclusions based on sample results may be attributed only to the population sampled.
NIM with specific study IM; no qualif; epidemiological & statist only: not for blood samples, soil samples, water samples, air samples, etc.
Other names Study, Sampling; Studies, Sampling; Sampling Study; Samples, Probability; Sample, Probability; Probability Samples; Probability Sample
