A note on the use of the intraclass correlation coefficient in the evaluation of agreement between two methods of measurement.

@article{Bland1990ANO,
  title={A note on the use of the intraclass correlation coefficient in the evaluation of agreement between two methods of measurement.},
  author={J Martin Bland and Douglas G. Altman},
  journal={Computers in biology and medicine},
  year={1990},
  volume={20 5},
  pages={337-40}
}
The intraclass correlation coefficient (rI) has been advocated as a statistic for assessing agreement or consistency between two methods of measurement, in conjunction with a significance test of the difference between means obtained by the two methods. We show that neither technique is appropriate for assessing the interchangeability of measurement methods. We describe an alternative approach based on estimation of the mean and standard deviation of differences between measurements by the two… CONTINUE READING
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Simpson , Assessing agreement

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