Table 1.

Main clinical features of patients and association with severity (p < 0.05).

	Mild (n = 31)	Moderate (n = 68)	Severe (n = 20)	Total (N = 119)	p value
Obesity
•Yes	7 (36.8%)	47 (79.7%)	8 (50.0%)	62 (66.0%)	<0.001∗
•No	12 (63.2%)	12 (20.3%)	8 (50.0%)	32 (34.0%)
Hypertension
•Yes	9 (29.0%)	23 (33.8%)	8 (40.0%)	40 (33.6%)	0.719
•No	22 (71.0%)	45 (66.2%)	12 (60.0%)	79 (66.4%)
Diabetes mellitus
•Yes	1 (3.3%)	8 (11.8%)	6 (30.0%)	15 (12.7%)	0.020∗
•No	29 (96.7%)	60 (88.2%)	14 (70.0%)	103 (87.3%)
Dyslipidemia
•Yes	7 (22.6%)	19 (27.9%)	9 (45.0%)	35 (29.4%)	0.211
•No	24 (77.4%)	49 (72.1%)	11 (55.0%)	84 (70.6%)
Smoking
•Yes	2 (14.3%)	7 (35.0%)	9 (60.0%)	18 (36.7%)	0.038∗
•No	12 (85.7%)	13 (65.0%)	6 (40.0%)	31 (63.3%)
Cardiovascular disease
•Yes	2 (6.5%)	6 (8.8%)	3 (15.0%)	11 (9.2%)	0.558
•No	29 (93.5%)	62 (91.2%)	17 (85.0%)	108 (90.8%)
Chronic Respiratory disease
•Yes	3 (9.7%)	2 (2.9%)	2 (10%)	7 (5.9%)	0.217
•No	28 (90.3%)	66 (97.1%)	18 (90%)	112 (94.1%)
Chronic kidney disease
•Yes	0 (0.0%)	3 (4.4%)	1 (5.3%)	4 (3.4%)	0.485
•No	31 (100.0%)	65 (95.6%)	18 (94.7%)	114 (96.6%)