Accuracy and precision of variance components in occupational posture recordings: a simulation study of different data collection strategies.

ABSTRACT:

Background

Information on exposure variability, expressed as exposure variance components, is of vital use in occupational epidemiology, including informed risk control and efficient study design. While accurate and precise estimates of the variance components are desirable in such cases, very little research has been devoted to understanding the performance of data sampling strategies designed specifically to determine the size and structure of exposure variability. The aim of this study was to investigate the accuracy and precision of estimators of between-subjects, between-days and within-day variance components obtained by sampling strategies differing with respect to number of subjects, total sampling time per subject, number of days per subject and the size of individual samp

SUBMITTER: Liv P 

PROVIDER: S-EPMC3377541 | biostudies-literature | 2012 Jun

REPOSITORIES: biostudies-literature