Frail phenotype is associated with distinct quantitative electroencephalographic findings among end-stage renal disease patients: an observational study

Table 3 Quantitative electroencephalographic results in this cohort

EEG variables	None to mildly frail (n = 16; 45.7%)	Moderately to severely frail (n = 19; 54.3%)	p value
Alpha wave
Central	24.2 ± 19.9	20.2 ± 12.2	0.58
Right temporo-occipital	17.4 ± 17.1	16.3 ± 10.3	0.82
Left temporo-occipital	24.7 ± 16.9	25 ± 16.6	0.97
Right frontal	20.8 ± 16.6	19 ± 12.7	0.73
Left frontal	24.2 ± 19.9	20.2 ± 12.2	0.5
Beta wave
Central	9.3 ± 5.1	10.5 ± 10.8	0.71
Right temporo-occipital	5.5 ± 4.2	7.7 ± 7.2	0.32
Left temporo-occipital	8.3 ± 5.9	10.3 ± 11.6	0.55
Right frontal	9.7 ± 8.1	10 ± 10.1	0.93
Left frontal	12.6 ± 9.6	12.7 ± 14.5	0.98
Delta wave
Central	49,967 ± 77,553	1540 ± 2363	0.01
Right temporo-occipital	34,693 ± 56,300	1158 ± 2002	0.01
Left temporo-occipital	44,802 ± 66,187	1735 ± 2843	< 0.01
Right frontal	44,333 ± 69,328	6057 ± 20,077	0.03
Left frontal	61,060 ± 87,196	1382 ± 2572	< 0.01
Theta wave
Central	36.4 ± 31.1	27.9 ± 25.8	0.39
Right temporo-occipital	16 ± 16.1	13.1 ± 12.7	0.56
Left temporo-occipital	19.6 ± 17.8	17.3 ± 13.2	0.67
Right frontal	24.3 ± 17.3	22.1 ± 21.6	0.76
Left frontal	26.5 ± 20.2	22.5 ± 20.8	0.59

Data are expressed as mean ± standard deviation for continuous variable and number (percentage) for categorical variables

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