Table 4.

Number and Percentage of Meter Results within Zones of the Consensus Error Grid.

Meter System	Zone A	Zone B	Zones C, D & E
OneTouch Vita	821/834 (98.4%)	13/834 (1.6%)	0/834 (0.0%)
OneTouch Ultra2	273/278 (98.2%)	5/278 (1.8%)	0/278 (0.0%)

Zone A = no effect on clinical action (clinically accurate);

Zone B = altered clinical action – little or no effect on clinical outcome;

Zone C = altered clinical action – likely to affect clinical outcome;

Zone D = altered clinical action – could have significant medical effect;

Zone E = altered clinical action – could have dangerous consequences.