Measuring agreement of administrative data with chart data using prevalence unadjusted and adjusted kappa

Chen, Guanmin; Faris, Peter; Hemmelgarn, Brenda; Walker, Robin L; Quan, Hude

doi:10.1186/1471-2288-9-5

Measuring agreement of administrative data with chart data using prevalence unadjusted and adjusted kappa

Background: Kappa is commonly used when assessing the agreement of conditions with reference standard, but has been criticized for being highly dependent on the prevalence. To overcome this limitation, a prevalence-adjusted and bias-adjusted kappa (PABAK) has been developed. The purpose of this s…