Table 4.

Univariate and multivariate analysis

	Univariate		Multivariate
	OR (95% CI)	P value	OR (95% CI)	P value
Age (years)	1.05 (1.002–1.1)	0.04	–	ns
Sex (male vs female)	1.63 (0.51–5.17)	0.41	–	–
Need for MV or CPAP support	1.78 (0.66–4.77)	0.25
Worst P/F	0.99 (0.987–1.00)	0.05	–	–
Worst CPR value (mg/L)	1.002 (0.997–1.01)	0.51	–	–
Worst D-Dimer (ng/L) (> 1157,5 vs ≤ 1157,5)	11.62 (2.97–45.43)	0.0004	10.32 (2.48- 42.91)	0.013
Worst LUS score	1.04 (0.95–1.14)	0.4	–	–

Univariate and multivariate logistic regression for age, sex, ventilator support, respiratory impairment (expressed as P/F), biochemical variables and LUS score during hospitalization as predictors of fibrotic-like changes on 6-month CT scan. MV mechanical ventilation, CPAP continuous positive airway pressure, P/F ratio PaO₂/FiO₂, CRP C reactive protein, LUS lung ultrasound

Bold values indicate statistical significance at the p < 0.05 level