Sustained Impairment in Cardiopulmonary Exercise Capacity Testing in Patients after COVID-19: A Single Center Experience

Table 2

Comparators of non-CPET values.

Variables	Overall cohort	In %	Nonlimited CPET1	In %	Limited CPET1	In %	value
	n = 30		n = 19		n = 11
Sex							0.442^a
Female	12	40	9	47	3	27
Male	18	60	10	53	8	73
Age							0.050^b
Mean (±SD)	52 (±14)		55 (±14)		45 (±11)
BMI							0.263^b
Mean (±SD)	27 (±6)		26 (±7)		28 (±3)
Patient care							1.000^a
Outpatient care	9	30	6	32	3	27
Inpatient care	21	70	13	68	8	73
COVID-19 severity							0.582^c
Mild/moderate	9	30	6	32	3	27
Severe	18	60	12	63	6	55
Critical	3	10	1	5	2	18
Ventilatory support							0.366^a
Noninvasive vent.	2	7	1	5	1	9
Invasive vent.	1	3	0	0	1	9
mMRC dyspnea sc.							0.497^c
mMRC 0	8	27	6	32	2	18
mMRC 1	20	67	12	63	8	73
mMRC 2	2	7	1	5	1	9
mMRC 3-4	0	0	0	0	0	0
FEV1							0.746^b
Mean (±SD)	98 (±14)		98 (±16)		99 (±11)
FVC							0.106^b
Mean (±SD)	100 (±16)		103 (±17)		94 (±12)

values: a = Fisher’s exact test, b = Student’s t-test of unpaired values, c = Mann-Whitney U-test; mean (±SD) = mean ± standard deviation; mMRC = modified medical research council dyspnea scale; FEV1 = forced expiratory volume in one second; FVC = forced vital capacity.