首页    期刊浏览 2025年06月10日 星期二
登录注册

文章基本信息

  • 标题:The use of pilot study data in the estimation od sample size
  • 本地全文:下载
  • 作者:Bernard Roser ; Alvaro Muñoz
  • 期刊名称:Revista Colombiana de Estadística
  • 印刷版ISSN:2389-8976
  • 出版年度:2009
  • 卷号:6
  • 期号:11
  • 语种:English
  • 出版社:Universidad Nacional de Colombia, sede Bogotá
  • 摘要:In the two sample binomial case, one approach to the estimation of sample size is to conduct a pilot study and assume that the observed proportion in the pilot study have no sampling error and are in fact true population parameter which can be used directly in standard sample size formulas. This approach has conceptual difficultie swhen such a pilot study is small since there is typically considerable error in the observed proportions. In this paper; we propose an lternative method which takes into account the sampling error in pilot study data in the estimation of sample size for a larger study. Tables are provided comparing these two methods and it is shown that the former deterministic method may provide a grossly inaccurate estímate of the appropriate sample size for alarger study, partlcularly for small pilot studies.
  • 关键词:Estadística;Estadística matemática; Tamaño de la muestra; Curvas de potencia; Distribución binomial; Inferencia bayesiana; Estudio piloto;Estadística matemática; Inferencia estadística; Probabilidades: Teoría estadística
国家哲学社会科学文献中心版权所有