Evaluation of short and long-term laboratory and instrumental findings in COVID-19 patients hospitalized in Tuscany

Table 2 Mean value and SD of forced expiratory volume in one second, forced vital capacity and forced expiratory volume in one second/forced vital capacity ratio at all follow-up time points Source: Regional Health Agency Sprint data

Time elapsed between follow-up and discharge date (days)	FEV1			FVC			FEV1/FVC ratio
	Patients (n)	Average value	SD	Patients (n)	Average value	SD	Patients (n)	Average value	SD
0-59	3			2			2
60-119	283	98.4	15.8	279	97.9	16.1	280	78.8	7.5
120-179	144	97.9	16.2	141	96.9	17.4	137	78.8	8.3
180-239	160	94.8	19.9	159	95.5	19.1	158	76.5	9.7
240-299	31	99.0	16.1	31	95.4	17.9	28	79.2	7.4
300+	93	96.4	17.7	91	90.7	19.2	88	81.7	6.5
	Test Anova P value: 0.242			Test Anova P value: 0.017			Test Anova P value: 0.001

FEV1: Forced expiratory volume in one second; FVC: Forced vital capacity.