Related concepts: alpha and beta The number of subjects studied, including those in the intervention group and the control group(Related concepts: randomization, concurrent control, histor..., where applicable. Note: In general, a large sample sizeRelated concepts: alpha and beta The number of subjects stud... decreases the probability of Type I (α) (false-positive) errors and increases the statistical powerAlternative spelling: standardized mean difference (SMD) The... of the trial, i.e. decreases the probability of Type II (β) (false-negative) errors. A large sample sizeRelated concepts: alpha and beta The number of subjects stud... decreases the effect of random variation on the estimate of a treatment effectRelated concept: effect size The effect on the subjects’ h.... In designing a study, the desired sample sizeRelated concepts: alpha and beta The number of subjects stud... can be calculated using a statistical formula based on the acceptable levels of α and β errors, the smallest difference between intervention groups considered clinically relevant, and the measurement variance(Related concepts: utility and preference.) A cardinal measu....
scoping reviewAnt.: prospective study. A study in which the investigators ... rapid reviewAlternate spelling: randomised controlled trial A study comp...