A Unified Approach for Assessing Agreement. Lawrence Lin, Baxter Healthcare A. S. Hedayat, University of Illinois at Chicago Wenting Wu, Mayo Clinic. Outline. Introduction Existing approaches A unified approach Simulation studies Examples. Introduction .
Lawrence Lin, Baxter Healthcare
A. S. Hedayat, University of Illinois at Chicago
Wenting Wu, Mayo Clinic
is the cumulative normal distribution
is the absolute value
is the inverse cumulative normal distribution
is a central Chi-squre distribution with df=1
and their variances and covariances by GEE method
: the covariance of two replications,
and ,with coming from rater and
coming from rater
: the variance from each combination of (i, j), i.e., each cell. Thus is the average of all cells’ variances.
: the variance of replication of rater
: the covariance of two replications, and , both of them coming from rater .
HemoCue method first readings vs. second readings
Sigma method first readings vs. second readings
HemoCue’s averages vs. Sigma’s averages
*: for all CCC, precision, accuracy and CP indices, the 95% lower limits are reported. For all TDI indices, the 95% upper limit are reported.