SAMPLE SIZES
\sˈampə͡l sˈa͡ɪzɪz], \sˈampəl sˈaɪzɪz], \s_ˈa_m_p_əl s_ˈaɪ_z_ɪ_z]\
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The number of units (persons, animals, patients, specified circumstances, etc.) in a population to be studied. The sample size should be big enough to have a high likelihood of detecting a true difference between two groups. (From Wassertheil-Smoller, Biostatistics and Epidemiology, 1990, p95)
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