title: Sampling techniques, confidence intervals, and sample size.
authors.affiliation: University College of Medical Sciences, Dilshad Garden, Delhi, India.
authors.forename: A
authors.initials: A
authors.lastname: Indrayan
authors.forename: P
authors.initials: P
authors.lastname: Gupta
mesh_terms: D016001:Confidence Intervals; D004812:Epidemiologic Methods; D006801:Humans; D011897:Random Allocation; D012107:Research Design; D018401:Sample Size; D009626:Terminology as Topic