Optimizing the diagnostic power with gastric emptying scintigraphy at multiple time points

Table 1 Parameter estimates (Area Under the Curve (AUC) and coefficient for best linear combination) with Fisher's Linear Discriminant Analysis (LDA) and Distribution Free (DF) approaches

	4-h		3-h		Linear combination DF				Linear combination LDA
	Raw	Tran	Raw	Tran	α	Raw	α	Tran	α	Raw	α	Tran
Mean	0.830	0.879	0.824	0.827	0.02	0.869	0.02	0.869	0.681	0.834	0.055	0.881
STD	0.002	0.001	0.002	0.002	0.00	0.001	0.00	0.001	0.032	0.002	0.002	0.001
Median	0.830	0.879	0.824	0.827	0.02	0.869	0.02	0.869	0.679	0.833	0.055	0.880
Range	0.013	0.009	0.011	0.009	0.00	0.008	0.00	0.008	0.284	0.012	0.017	0.009

Note: Raw stands for AUC for measurement in original scale;
Tran represents AUC for measurement in transformed scale;
α is coefficient for the best linear combination for measurement at 3-h after meal.

ISSN: 1471-2288