International normalized ratio (INR) for capillary blood (cb) samples on the AvoSure PT PRO analyzer and the
Thrombotrack Nycomed Analyzer. A, Regression values; 95% confidence interval (hatched lines). Identity line, y = x (dotted
line). Solid line represents the mean. y = 0.8586x + 0.6933; R2 = 0.8875; P < .007. B, Bland-Altman plot values. The mean (solid
line) ± SD = 1.96 (dotted lines) is shown. For proprietary information, see the text.