Sampling uncertainty in medical research.
Osteoarthritis and cartilage / OARS, Osteoarthritis Research Society, 17 (11):
1416-9 (November 2009)5564<m:linebreak></m:linebreak>JID: 9305697; RF: 8; 2009/01/07 received; 2009/03/27 revised; 2009/04/03 accepted; 2009/04/17 aheadofprint; ppublish;<m:linebreak></m:linebreak>Generalització.DOI: 10.1016/j.joca.2009.04.007
Abstract
Objective: Statistical analysis is ubiquitous in medical research, but fundamental statistical principles are not always well understood, which has negative effects for both authors and readers of scientific papers. The purpose of this brief review is to provide a methodological overview on populations, samples, analysis units and sampling uncertainty to facilitate an increased understanding of statistical concepts.