Table 1.

Validation of warfarin dosing algorithms in an admixed Brazilian cohort^*

		Algorithm 1†		Algorithm 2†
Cohort	n	R2	MAE‡	R2	MAE‡
Overall	390	0.44	11.3	0.46	9.6
White‡	196	0.49	10.4	0.50	8.8
Brown + black§	194	0.34	12.2	0.40	10.4

^*Cohort studied by Perini et al. [10].

^†Algorithms 1 and 2 from Botton et al. [7].

^‡MAE, mean absolute error between predicted and observed warfarin doses.

^§Self-identity according to criteria and terminology adopted by the Brazilian Census.