Table 2.

Probability of Insulin Dose Error^a

Meter	Blood sample number	Coding	% probability of occurrence
			± 1 unit	± 2 units	± 3 units	± 4 units	± 5 units
A	139	Correctly coded (autocoding)	27.65	0.96
B	140	Correctly coded (autocoding)	35.42	1.41
C	143	Correctly coded (manual coding)	43.07	6.57	0.48
C	143	Miscoded 1	40.20	40.66	14.00	1.4	0.04
C	143	Miscoded 2	36.98	4.22	0.22
D	136	Correctly coded (manual coding)	32.55	1.77	0.04
D	136	Miscoded 1	49.61	28.29	5.92	0.78
D	135	Miscoded 2	41.85	15.64	0.52
E	137	Correctly coded (manual coding)	44.64	7.06	0.49
E	138	Miscoded 1	33.99	50.00	15.14	0.40
E	137	Miscoded 2	26.7	49.7	22.25	1.21

^aCalculated insulin dose error for all meters across all time points based on the low-dose algorithm and on a normal distribution assumption.