Description Usage Format Source See Also Examples
For each subject (item
) there are three replicate measurements by
three methods (two observers, J and R and the automatic machine,
S). The replicates are linked within (method,item).
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A data frame with 765 observations on the following 4 variables:
meth
Methods, a factor with levels J
(observer
1), R
(observer 2) and S
(machine)
item
Person id, numeric.
repl
Replicate number, a numeric vector
y
Systolic blood pressure masurement, a numeric vector
The dataset is adapted from table 1 in: JM Bland and DG Altman: Measuring agreement in method comparison studies. Statistical Methods in Medical Research, 8:136-160, 1999. Originally supplied to Bland \& Altman by E. O'Brien, see: Altman DG, Bland JM. The analysis of blood pressure data. In O'Brien E, O'Malley K eds. Blood pressure measurement. Amsterdam: Elsevier, 1991: 287-314.
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