Table 2.

Evaluation of possible risk factors associated with the most prevalent symptoms

	Fatigue		Dyspnoea		Anxiety or Depression		Muscle or Join Pain		Concentration problems
	OR (95% CI)	p value	OR (95% CI)	p value	OR (95% CI)	p value	OR (95% CI)	p value	OR (95% CI)	p value
Gender  Men (ref)  Women	4.65 (1.25–17.30)	0.02	6.01 (1.61–22.34)	< 0.01	2.40 (0.70–8.20)	0.16	1.92 (0.60–6.20)	0.30	0.90 (0.30–2.30)	0.87
Age	0.98 (0.94–1.02)	0.31	0.97 (0.93–1.01)	0.20	0.97 (0.93–1.00)	0.12	0.96 (0.92–0.99)	0.03	0.95 (0.91–0.99)	0.04
Comorbidities  None or 1 (ref)  2 or more	1.60 (0.50–5.10)	0.42	2.78 (0.81–9.45)	0.10	3.64 (1.10–12.20)	0.04	1.40 (0.44–4.51)	0.57	2.30 (0.65–9.12)	0.09
Need for HFO or MV  No (ref)  Yes	2.40 (0.75–7.73)	0.14	3.36 (1.02–11.14)	0.05	0.75 (0.25–2.30)	0.61	0.98 (0.31–3.02)	0.97	0.72 (0.23–2.20)	0.56

Most prevalent symptoms were considered those that occupied the first places when order by frequency

A regression logistic model was used for calculation of OR 95% CI. MV (mechanical ventilation, including non-invasive and invasive mechanical ventilation); HFO (high-flow oxygen)