Bland-Altman Analysis Calculator
Assess agreement between two measurement methods
About Bland-Altman Analysis
Bland-Altman analysis assesses agreement between two measurement methods on the same subjects.
Bias: Mean difference between methods (systematic error).
LoA: Mean ± 1.96 × SD - range within which 95% of differences fall.
Proportional bias: If differences correlate with means, the bias varies with measurement magnitude.