Table III.

Differences in clinical characteristics of 211 Front-Line and Non-Front-Line HCWs with confirmed COVID-19

Characteristic	No. (%)			P valuea
	All (n=211)	Front-line HCWs (n=44)	Non front-line HCWs (n=167)
Comorbidities
Hypertension	23 (13.4)	5 (13.5)	18 (13.3)	1.00
Diabetes	2 (1.2)	1 (2.7)	1 (0.7)	0.38
Cardiovascular disease	8 (4.7)	3 (8.1)	5 (3.7)	0.37
Respiratory disease	32 (18.6)	9 (24.3)	23 (17)	0.34
Neoplasia	6 (3.5)	1 (2.7)	5 (3.7)	1.00
Liver disease	1 (0.6)	0	1 (0.7)	1.00
Haematological disease	3 (1.8)	1 (2.9)	2 (1.5)	0.51
Kidney disease	4 (2.3)	1 (2.7)	3 (2.2)	1.00
Neurological disease	3 (1.7)	0	3 (2.2)	1.00
Other	22 (12.6)	2 (5.4)	20 (14.6)	1.00
Signs and symptoms
Fever	63 (31.0)	12 (28.6)	51 (31.7)	0.69
Cough	104 (50.7)	28 (66.7)	76 (46.6)	0.02b
Dyspnoea	42 (20.6)	12 (28.6)	30 (18.5)	0.15
Myalgias	126 (61.5)	29 (69.0)	97 (59.5)	0.26
Headaches	109 (53.4)	24 (57.1)	85 (52.5)	0.58
Anosmia	110 (53.9)	23 (54.8)	87 (53.7)	0.90
Ageusia	102 (50.0)	24 (57.1)	78 (48.1)	0.29
Asthenia	131 (64.2)	29 (69.0)	102 (63.0)	0.46
Diarrhoea/gastrointestinal symptoms	65 (32.7)	15 (36.6)	50 (31.6)	0.54
Odynophagia	53 (26.0)	11 (26.2)	42 (25.9)	0.97
Risk factors
Smoker	20 (11.4)	3 (8.1)	17 (12.2)	0.46
Immunosuppression	2 (1.2)	0	2 (1.5)	1.00
Pregnancy	1 (0.6)	1 (0.8)	0	0.17
Days with signs and symptoms	23.2 (16.9)	30.4 (18.2)	21.5 (16.2)	0.01b
Severity criteria
Fever >38° C for more than 2 days or fever again	13 (6.7)	0	13 (8.4)	0.07
Dyspnoea at rest or small efforts	9 (4.6)	4 (10)	5 (3.2)	0.08
Thoracic pain	10 (5.1)	2 (5)	8 (5.2)	1.00
Persistent vomiting or diarrhoea	1 (0.5)	0	1 (0.6)	1.00

HCWs, health care workers; COVID-19, coronavirus disease 2019; SD, standard deviation.

^aP values indicate differences between front-line and non-front-line HCWs from the results of a Student's t-test, χ² test, or Fisher exact test.

^bStatistically significant.