Results 1 to 10 of about 1,665,524 (217)

Small Sample Studies: Unique Contributions for Large Sample Outcome Studies [PDF]

open access: yesSchizophrenia Bulletin, 1988
There are many important issues relevant to the course of illness and outcome of chronic psychiatric disorders that are not readily amenable to investigation with existing large sample, quantitative methodology. For example, complex interactive phenomena that change over time, such as the longitudinal impact of changes in social and work function on ...
openaire   +2 more sources

Study Sampling in the Canadian Study of Health and Aging

open access: yesInternational Psychogeriatrics, 2001
The Canadian Study of Health and Aging drew representative samples of people aged 65 or over from the community and institutions across Canada. The sample was designed to provide regional and national prevalence estimates for dementia by age and sex. Thirty-six sampling areas were used in a stratified cluster design with optimal allocation; sampling ...
I, McDowell   +4 more
openaire   +2 more sources

Sample size in usability studies [PDF]

open access: yesCommunications of the ACM, 2012
Magic numbers are strictly hocus-pocus, so usability studies must test many more subjects than is usually assumed.
openaire   +1 more source

A Study on Sample Allocation for Stratified Sampling

open access: yesKorean Journal of Applied Statistics, 2015
Stratified random sampling is a powerful sampling strategy to reduce variance of the estimators by incorporating useful auxiliary information to stratify the population. Sample allocation is the one of the important decisions in selecting a stratified random sample.
Ingue Lee, Mingue Park
openaire   +2 more sources

Evidentials and advertising: a sample study

open access: yesRevista de Lingüística y Lenguas Aplicadas, 2017
[EN] This paper explores the use of evidential devices in press adverts in English in a compilation of original advertisements. Due to the appellative nature of advertising discourse, I think that these texts are likely to convey source of knowledge through evidentials as an advertising strategy in order to pragmatically manifest a higher level of ...
openaire   +6 more sources

Sample size for ophthalmology studies.

open access: yesIndian journal of ophthalmology, 2000
Knowledge and the usage of actual sample size formulae are a necessity as validity of the inferences from research studies is often dependent on this. This paper explains how sample sizes are calculated. The concept of sampling variation is explained to emphasize the need for its proper calculation.
Naduvilath Thomas   +2 more
openaire   +2 more sources

HIV prevalence among transgender women in Northeast Brazil - Findings from two Respondent Driven Sampling studies. [PDF]

open access: yesBMC Public Health, 2022
Leite BO   +6 more
europepmc   +1 more source

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