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. 2022 Jun 15;11(12):3440. doi: 10.3390/jcm11123440

Table 3.

Comparison of CFQ, CESD, and IES-R scales between participants with and without brain fog.

With Brain Fog
(n = 71)
Without Brain Fog
(n = 37)
p-Value
Chalder Fatigue Scale:
CFQ score, x (SD) 26.9 (4.7) 20.9 (5.1) <0.001 +
Fatigued, % 97.1 90.9 0.325 ++
Center for Epidemiological Studies Depression Scale:
CESD score, x (SD) 22.2 (12.6) 15.0 (9.8) 0.013 +
At risk of depression, % 69.8 46.2 0.017 §
Impact of Events Scale—Revised:
IES-R score, x (SD) 32.5 (21.1) 20.2 (15.4) 0.008 +
PTSD symptoms, % 47.8 28.1 0.064 §

+ independent samples Mann–Whitney U test; § chi-square test; ++ Fisher’s exact test; x, mean; SD, standard deviation; PTSD, post-traumatic stress disorder.