Review of sample size determination methods for the intraclass correlation coefficient in the one-way analysis of variance model.

ABSTRACT: Reliability of measurement instruments providing quantitative outcomes is usually assessed by an intraclass correlation coefficient. When participants are repeatedly measured by a single rater or device, or, are each rated by a different group of raters, the intraclass correlation coefficient is based on a one-way analysis of variance model. When planning a reliability study, it is essential to determine the number of participants and measurements per participant (i.e. number of raters or number of repeated measurements). Three different sample size determination approaches under the one-way analysis of variance model were identified in the literature, all based on a confidence interval for the intraclass correlation coefficient. Although eight different confidence interval methods can be

SUBMITTER: Mondal D 

PROVIDER: S-EPMC10981208 | biostudies-literature | 2024 Mar

REPOSITORIES: biostudies-literature