Table 4.
Correlation (Spearman's rho) between cognitive symptoms and cognitive test results within the COVID-19 groupa.
| Cognitive symptoms | ||||||
|---|---|---|---|---|---|---|
| Cognitive test results | Concentration difficulty | Difficulty making decisions | Memory difficulty | Feeling confused or disoriented | Summary score of cognitive symptomsb | |
| Digit span forward, total sum score | Corr.coeff.(rho) | 0.02 | 0.04 | −0.07 | −0.08 | 0.00 |
| p-value | 0.64 | 0.40 | 0.17 | 0.14 | 0.98 | |
| Digit span backward, total sum score | Corr.coeff.(rho) | 0.03 | 0.07 | −0.05 | −0.05 | 0.02 |
| p-value | 0.54 | 0.15 | 0.31 | 0.29 | 0.70 | |
| HVLT-R, immediate recall, total sum score | Corr.coeff.(rho) | −0.10 | −0.01 | −0.09 | −0.09 | −0.08 |
| p-value | 0.05 | 0.82 | 0.09 | 0.09 | 0.11 | |
| HVLT-R, delayed recall, total sum score | Corr.coeff.(rho) | −0.04 | 0.06 | 0.00 | −0.03 | −0.01 |
| p-value | 0.39 | 0.21 | 0.99 | 0.59 | 0.82 | |
| HVLT-R correct recognition | Corr.coeff.(rho) | 0.06 | 0.04 | 0.03 | 0.08 | 0.05 |
| p-value | 0.21 | 0.44 | 0.57 | 0.11 | 0.31 | |
| HVLT-R false recognition | Corr.coeff.(rho) | 0.02 | 0.02 | 0.05 | 0.02 | 0.04 |
| p-value | 0.63 | 0.68 | 0.35 | 0.63 | 0.45 | |
a
A total of 30 statistical tests are displayed in this table; a Bonferroni-correction for test multiplicity suggests a level of significance at 0.05/30 = 0.002.
b
Summary score of cognitive symptoms is an additive score of the four symptom scores; Concentration difficulty, Difficulty making decisions, Memory difficulty and Feeling confused or disorientated.