Table 4.

Analyses of Four Different Group Stratifications^a

qEEG measure	Male (n = 22)	Female (n = 12)	p value		qEEG measure	Age < 50 years (n = 14)	Age ≥ 50 years (n = 20)	p value
Absolute amplitudeb					Absolute amplitudeb
Delta	0.61 ± 0.43	0.72 ± 0.35	ns	Delta	0.66 ± 0.48	0.64 ± 0.34	ns
Theta	0.68 ± 0.28	0.91 ± 0.34	<0.05	Theta	0.73 ± 0.31	0.78 ± 0.33	ns
Alpha	0.36 ± 0.21	0.39 ± 0.37	ns	Alpha	0.37 ± 0.33	0.38 ± 0.23	ns
Beta	0.13 ± 0.36	0.06 ± 0.57	ns	Beta	0.15 ± 0.49	0.07 ± 0.40	ns
Centroid frequency					Centroid frequency
Delta	0.05 ± 0.14	0.06 ± 0.13	ns	Delta	0.03 ± 0.15	0.07 ± 0.12	ns
Theta	-0.00 ± 0.17	0.01 ± 0.15	ns	Theta	-0.01 ± 0.18	0.02 ± 0.15	ns
Alpha	-0.18 ± 0.20	-0.16 ± 0.13	ns	Alpha	-0.14 ± 0.16	-0.20 ± 0.19	ns
Beta	-0.26 ± 0.66	-0.28 ± 0.84	ns	Beta	-0.15 ± 0.79	-0.35 ± 0.66	ns
Peak frequency					Peak frequency
Theta–alpha	-2.00	-1.625	ns	Theta–alpha	-2.25	-1.625	ns
qEEG measure	dur < 20 years (n = 13)	dur ≥ 20 years (n = 21)	p value	qEEG measure	Unaware (n = 28)	Aware (n = 6)	p value
Absolute amplitudeb					Absolute amplitudeb
Delta	0.62 ± 0.45	0.67 ± 0.37	ns	Delta	0.53	0.76	ns
Theta	0.75 ± 0.28	0.77 ± 0.37	ns	Theta	0.69	0.93	ns
Alpha	0.44 ± 0.27	0.33 ± 0.27	ns	Alpha	0.37	0.33	ns
Beta	0.16 ± 0.41	0.07 ± 0.46	ns	Beta	0.22	-0.25	<0.05
Centroid frequency					Centroid frequency
Delta	0.05 ± 0.15	0.05 ± 0.11	ns	Delta	0.04	0.10	ns
Theta	0.01 ± 0.14	-0.00 ± 0.18	ns	Theta	0.00	0.08	ns
Alpha	-0.18 ± 0.19	-0.17 ± 0.18	ns	Alpha	-0.11	-0.37	<0.05
Beta	-0.34 ± 0.71	-0.23 ± 0.73	ns	Beta	-0.03	-1.08	<0.01
Peak frequency					Peak frequency
Theta–alpha	-2.25	-1.75	ns	Theta–alpha	-1.625	-2.25	ns

^aMean and standard deviation of paired hypoglycemia versus normoglycemia changes (median if nonparametric). A positive change means that the qEEG measure value in the hypoglycemic state exceeds that of the euglycemic state. Two-sample t tests for equal means or Wilcoxon rank sum tests for equal medians lead to the associated p values.

^bNatural logarithm of absolute amplitude.