Dataset:  cardiacoutput_measure.csv

Source: J.M. Bland and D.G. Altman (1999). "Measuring Agreement in Method
Comparison Studies," Statistical Methods in Medical Research, Vol. 8,
pp. 135-160.

Description: Cardiac output measurements on 12 subjects, with 2 methods,
and with varying replicates per method per subject. Methods:
radionuclide ventriculography (rv_cardout)
impedance cardiography  (iv_cardout)
Subject ID is labelled: subj_id