Table 2.

Linear Regression Analysis of the Four Blood Glucose Meter Systems

	n	y	Slope	Intercept (mg/dl)	r
System A	103	0.99x − 1.7	0.96 to 1.02	−7.3 to 3.9	0.9872
System B	101	0.96x + 10.8	0.93 to 0.99	5.3 to 16.3	0.9871
System C	102	1.01x − 11.3	0.97 to 1.05	−18.3 to −4.4	0.9816
System D	88	1.07x − 15.2	1.03 to 1.11	−22.4 to −8.0	0.9847