Evaluation of a handheld creatinine measurement device for real-time determination of serum creatinine in radiology departments

Table 3 Results of the re-analysed data from centre 1 (n = 201), shown pre- and post-implementation of the curve offset, separated for the two devicespre- and post-offset correction

	Device	Slope	Intercept (mg/dL)	r2	Mean difference (mg/dL) (method-difference)	STDV of differences (method-difference)	% bias
Pre offset	A	0.765	0.065	0.870	-0.16	0.16	-15.54
	B	0.745	0.089	0.845	-0.16	0.17	-14.76
Post offset	A	1.110	-0.099	0.870	0.01	0.19	0.39
	B	1.088	-0.084	0.845	0.00	0.20	-0.02

The results are given as slope, intercept, mean difference, standard deviation and percentage bias.