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. Author manuscript; available in PMC: 2012 Oct 1.
Published in final edited form as: Neurobiol Aging. 2009 Dec 14;32(10):1742–1755. doi: 10.1016/j.neurobiolaging.2009.11.010

Table 5.

Cross-validation: mean linear discriminant function coefficients (SD) using ERP measures for classifying MCI individuals into Progress to AD and Stable groups. Variable names: 3-digit numbers indicate latency (ms) of the ERP component waveform maxima; Rel or Irr indicate relevant or irrelevant stimulus conditions that evoked the ERP.

Variable Progress Stable
(n=15) (n=28)
Constant −1.54(0.31) −1.25(0.09)
C185_Rel 1.46(0.15) −0.36 (0.07)
C540_Rel 1.49(0.19) −1.49(0.20)
C415_Rel −1.62(0.23) 1.84(0.32)
C415_Irr −0.39(0.31) −3.34(0.27)
C250_Irr 2.09 (0.70) −3.05 (0.45)
C250_Rel −2.92 (0.84) 1.88(0.39)
C325_Irr −1.25(0.28) 1.04(0.18)
C540_Irr 0.04 (0.24) 0.90(0.16)

Note. Means and standard deviations of the coefficients were calculated from the cross-validation where each subject was omitted from creating the discriminant functions. Thus, 43 sets of discriminant coefficients were the data underlying these numbers.