Ongoing oxidative stress in individuals with post-acute sequelae of COVID-19.

Group status and age showed a trend for interaction for GSH in the frontal GM ( Figure 2(b) : interaction-p=0.090), since only the older PASC individuals had lower GSH (r=−0.466, p=0.012), but not the controls.

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Lastly, our sample size is modest, which might have led to borderline significance for some measures (e.g., the group-by-age interaction for GSH or for GABA in the frontal GM).

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