Weighted electroencephalogram (EEG) spectral power means between <i>ADA</i> G22A genotype groups in the matched sample.

Estimates of the effect size (η2) and observed power are also shown; Weighted general linear model of EEG spectral power in matched ADA genotype groups individuals; Individuals are matched in regard to age, sex, body mass index, caffeine intake status, European ancestry, sleep disturbance (Obstructive Sleep Apnea Syndrome, Restless Legs Syndrome or DSM-IV Insomnia) and sleep-disturbing medication (phytotherapics, antidepressants, benzodiazepines, anticonvulsants, muscle relaxants, or zolpidem); Results are shown as weighted mean spectral power ± standard deviation; Spectral power values are represented in µV2/Hz.