Research Article

Cognitive Impairment and Fatigue in Intensive Care Patients Three Months after the Acute Phase of COVID-19 Infection: Follow-Up with Focus on Differences between the First and Later Waves of the Pandemic

Table 3

Cognitive functioning, fatigue, depression, anxiety, sleep disorder, and vitality in comparison to time periods.

TotalWave 1Wave 2+ value

MoCA total score, Mean (SD)
Median (range)
26.2 (3.1)
27 (18-31)
25.9 (3.3)
26 (20-30)
26.5 (3.0)
27 (18-31)
0.550

points (%)18 (30%)10 (38%)7 (23%)0.192

General fatigue (MFI-20)Mean (SD)
Median (range)
14.1 (4.2)
15 (2-20)
()
13.1 (4.2)
13.5 (5-20)
()
15.0 (4.0)
15.5 (2-20)
()
0.062

Physical fatigue (MFI-20)Mean (SD)
Median (range)
14.9 (3.8)
15 (6-20)
()
14.0 (3.9)
15 (6-20)
()
15.6 (3.1)
16 (9-20)
()
0.107

Reduced activity (MFI-20)Mean (SD)
Median (range)
13.2 (4.3)
13 (5-20)
()
12.2 (4.3)
12 (5-20)
()
13.9 (4.2)
14 (5-20)
()
0.105

Reduced motivation (MFI-20)Mean (SD)
Median (range)
9.3 (3.9)
8 (4-19)
()
9.2 (3.9)
9 (4-19)
()
9.3 (4.0)
8 (4-19)
()
0.949

Mental fatigue (MFI-20)Mean (SD)
Median (range)
10.2 (4.0)
10 (4-20)
()
9.8 (4.0)
10 (4-20)
()
10.6 (4.0)
10.5 (4-20)
()
0.349

Depression (HADS)Mean (SD)
Median (range)
4.2 (4.2)
3 (0-18)
()
4.0 (4.6)
2 (0-20)
()
4.4 (4.0)
3 (0-18)
()
0.398

Anxiety (HADS)Mean (SD)
Median (range)
4.2 (4.7)
3 (0-17)
()
4.9 (5.4)
2 (0-17)
()
4.6 (4.1)
4 (0-13)
()
0.859

Sleep disorder (ISI)Mean (SD)
Median (range)
10.1 (7.2)
8 (0-28)
()
10.4 (7.1)
8 (0-24)
()
9.9 (7.3)
8 (0-27)
()
0.638

General health (RAND-36)Mean (SD)
Median (range)
47.5 (19.2)
45 (5-80)
()
44.1 (22.4)
45 (5-80)
()
50.5 (17.0)
50 (15-80)
()
0.266

Vitality (RAND-36)Mean (SD)
Median (range)
47.9 (22.4)
50 (5-100)
()
51.0 (25.3)
55 (5-100)
()
45.4 (19.2)
40 (5-85)
()
0.312

Values are displayed as mean, standard deviation (SD), median, and range. values for differences between waves 1 and 2+ are presented. Mann–Whitney -test was used for discrepancy analysis. Confidence interval was set at 95% for all variables.