Discriminant ratio and biometrical equivalence of measured vs. calculated apolipoprotein B100 in patients with T2DM

Table 2 Precision and discrimination of three apoB ₁₀₀ estimates, expressed as underlying between-subject Standard Deviation (SD _u ), global within subject Standard Deviation (SD _w ), and Discriminant Ratio (DR)

	SD_u	SD_w	DR	Cls
measured apoB₁₀₀ (mg/dL)	17.8	19.9	0.90	0.63-1.19
equation 1:apoB₁₀₀(mg/dL) = [0. 65 × non − HDL − C (mg/dL)] + 6. 3 (mg/dL)	15.8	19.7	0.80	0.53-1.10
equation 2:apoB₁₀₀ (mg/dL) = − 33. 12 (mg/dL) + [0. 675 × LDL − C (mg/dL) + [11. 95 × ln[TG] (mg/dL)]	14.5	19.4	0.75	0.47-1.04

Values from results of individual tests and means of their duplicates in 87 patients with type 2 diabetes. Confidence intervals [Cls] for DR’s [2.5-97.5%] in square brackets. apo, apolipoprotein; HDL-C, high-density lipoprotein cholesterol; LDL, low-density lipoprotein; TG, triglycerides. All differences between DR’s were non significant (p > 0.05).

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