title: Calculating correlation coefficients with repeated observations: Part 2--Correlation between subjects.
authors.affiliation: Department of Public Health Sciences, St George's Hospital Medical School, London.
authors.forename: J M
authors.initials: JM
authors.lastname: Bland
authors.forename: D G
authors.initials: DG
authors.lastname: Altman
mesh_terms: D001785:Blood Gas Monitoring, Transcutaneous; D006801:Humans; D006863:Hydrogen-Ion Concentration; D018709:Statistics, Nonparametric