Table 4.

Correlation of the length of stay in the intensive care unit and APACHE II scores of the individuals in the COVID-19 group with the measured parameters.

Parameter d	Length of Stay in the Intensive Care Unit		APACHE II Scores		Time Up Go Test
	r	p	r	p	r	p
Vaccination status	−0.633	0.001 *	−0.426	0.03 *	0.298	0.14
Time Up Go Test	−0.095	0.64	0.015	0.94	-	-
MMRC	0.327	0.10	0.368	0.06	0.221	0.28
FVC	−0.564	0.003 *	−0.455	0.02 *	−0.442	0.02 *
FEV1	−0.453	0.02 *	−0.315	0.12	−0.546	0.004 *
6MWT distance	−0.427	0.03 *	−0.449	0.02 *	−0.075	0.72
ΔSpO2	0.469	0.02 *	0.417	0.03 *	−0.242	0.23
Handgrip strength	−0.487	0.01 *	−0.330	0.10	−0.295	0.14
HADS	0.394	0.047 *	0.394	0.046 *	0.102	0.62
NHP Total Score	0.039	0.85	0.131	0.52	0.494	0.01 *
NHP Pain	0.232	0.25	0.169	0.41	0.146	0.48
NHP Emotional Reactions	−0.118	0.57	0.052	0.80	0.418	0.03 *
NHP Sleep	0.018	0.93	0.122	0.55	0.555	0.003 *
NHP Social Isolation	−0.132	0.52	−0.120	0.56	−0.030	0.89
NHP Physical Activity	0.104	0.61	0.259	0.20	0.490	0.01 *
NHP Energy	0.086	0.67	0.142	0.49	0.353	0.08
SGRQ Total Score	0.568	0.002 *	0.372	0.06	0.112	0.59
SGRQ Symptom	0.551	0.004 *	0.339	0.09	0.101	0.62
SGRQ Activity	0.532	0.005 *	0.396	0.045 *	0.133	0.52
SGRQ Impact	0.573	0.002 *	0.428	0.03 *	0.074	0.72

* The bold values represent statistically significant p < 0.05 values. ^d Spearman correlation analysis. Vaccination status: Number of vaccine doses of the individuals. MMRC—Modified Medical Research Council; FVC—Forced vital capacity; FEV₁—Forced expiratory volume in one second; 6MWT—6-minute walk test; ΔSpO₂—Oxygen saturation difference before and after 6MWT; HADS—Hospital Anxiety and Depression Scale; NHP—Nottingham Health Profile; SGRQ—St. George Respiratory Questionnaire.