Table 3.

Neuropsychological findings related to clinical characteristics.

Symptom/Subtest	Leven’s Test for Equality of Variances		t-test for Equality of Means
	F	Sig.	t	Sig.
CEFALEA (N ​= ​22)
TAVEC-1	.736	0.389	2.221	0.033
TAVEC-Total	.752	0.392	2.937	0.006
TAVEC-B	.029	0.866	2.805	0.008
TAVEC-IMR	.824	0.371	2.331	0.026
Digits Forward	.094	0.761	3.392	0.002
Digits Backwards	.160	0.692	2.261	0.031
Letter&Number	.173	0.680	2.177	0.037
TMT-B	.254	0.617	2.488	0.018
SDMT	.828	0.369	2.727	0.010
Stroop Lecture	1.155	0.291	2.685	0.011
Phonetic fluency	1.399	0.245	2.211	0.034
Cognitive Index	.667	0.420	3.475	0.002
ANOSMIA (N ​= ​20)
Digits Backwards	1.802	0.189	2.259	0.031
DYSGEUSIA (N ​= ​20)
Digits Backwards	1.802	0.189	2.259	0.031
BNT	.043	0.837	3.596	0.001
DIARRHEA (N ​= ​14)
WMS-DFR	.341	0.563	2.082	0.045
Digits Backwards	.183	0.671	2.470	0.019
Letter&Number	3.522	0.069	2.102	0.043
Stroop Color	5.504	0.025	−2.370a	0.032
OXYGEN (N ​= ​21)
TAVEC-IMR	.053	0.820	2.270	0.030
WMS-DFR	.974	0.331	3.046	0.005
Digits Forward	.615	0.439	3.379	0.002
Digits Backwards	2.383	0.132	2.185	0.036
Letter&Number	.071	0.791	2.320	0.027
TMT-A	.159	0.693	2.193	0.035
TMT-B	.491	0.488	2.778	0.009
SDMT	.366	0.550	2.281	0.029
Stroop Lecture	3.018	0.092	2.403	0.022
Stroop Color	1.292	0.264	2.090	0.045
Stroop Interference	.049	0.825	2.431	0.021
Semantic Fluency	6.923	0.013	2.601a	0.014
Cognitive Index	1.426	0.241	2.727	0.010
ICU (N ​= ​7)
TMT-B	.026	0.873	2.177	0.037
COGNITIVE COMPLAINTS (N ​= ​12)
HAD Anxiety	5.266	0.028	−2.172a	0.047
HAD Depression	.878	0.356	−2.817	0.008

Abbreviations: ICU, Intensive Care Unit; TAVEC-1, Test de Aprendizaje Verbal España-Complutense learning 1; TavecTotal, Test de Aprendizaje Verbal España-Complutense sum of learning; TAVEC-B, Test de Aprendizaje Verbal España-Complutense learning B; TAVEC-IMR, Test de Aprendizaje Verbal España-Complutense Immediate Recall; WMS-DFR, Visual Reproduction of the Wechsler Memory Scale –IV Deferred Free Recall; TMT-A, Trail Making Test A; TMT-B, Trail Making Test B; SDMT, Symbol Digit Modalities Test; BNT, Boston Naming Test; HAD, Hospital Anxiety and Depression scale. F, Levene Test; t., Student Test; Sig., Significance; values indicate differences between patients with symptoms and without symptoms. N represents subjects with symptoms. Table showed subtests with less than 0.05 which was considered statistically significant.

^aNon-equal variances are assumed.