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. 2021 Mar 2;8:616106. doi: 10.3389/fmed.2021.616106

Table 1.

Sociodemographic and comorbid information of study groups according to positive CAST results.

COVID-19 patients
Mean (SD) or # (%)
Healthcare workers (HCW)
Mean (SD) or # (%)
Healthy voluntary donors (HD)
Median (SD) or # (%)
Variables Total
participants
(n = 96)
CAST
Positive
(n = 65)
Total
participants
(n = 351)
CAST
Positive
(n = 45)
Total
participants
(n = 255)
CAST
Positive
(n = 34)
Age 54.9 (15.7) 53.1 (14.5) 39.5 (11.5) 41.1 (11.3) 73.2 (11.1) 35.5 (10.3)
   <20 0 (0%) 0 (0%) 0 (0%) 0 (0%) 7 (2.7%) 1 (2.9%)
   20–39 16 (16.7%) 10 (15.4%) 198 (56.4%) 22 (48.9%) 141 (55.3%) 22 (64.7%)
   40–59 44 (45.8%) 35 (53.8%) 137 (39.0%) 19 (42.2%) 100 (39.2%) 11 (32.3%)
   60–79 31 (32.3%) 17 (26.1%) 19 (5.4%) 4 (8.9%) 7 (2.7%) 0 (0%)
  >80 5 (5.2%) 3 (4.6%) 0 (0%) 0 (0%) 0 (0%) 0 (0%)
Sex
   Male 64 (66.7%) 46 (70.8%) 113 (32.3%) 10 (22.2%) 181 (71.0%) 23 (67.6%)
   Female 32 (33.3%) 19 (29.2%) 238 (67.8%) 35 (77.7%) 74 (29.0 %) 11 (32.4%)
COVID-19 contact
   No contact 27 (29.0%) 15 (23.1%) 52 (14.8%) 5 (11.1%) 222 (87.0%) 24 (70.6%)
   Contact 34 (36.6%) 26 (40.0%) 256 (72.9%) 34 (75.6%) 20 (7.8%) 7 (20.6%)
   Doesn't know 32 (34.4%) 23 (35.4%) 43 (12.2%) 6 (13.3%) 13 (5.1%) 3 (8.8%)
Chronic diseases
   Hypertension 46 (47.9%) 33 (50.8%) 55 (15.7%) 6 (13.3%) 15 (5.9%) 1 (2.9%)
   Renal failure 13 (13.5%) 6 (9.2%) 1 (0.3%) 1 (2.2%) 0 (0%) 0 (0%)
   Respiratory insufficiency 3 (3.1%) 1 (1.5%) 0 (0%) 0 (0%) 0 (0%) 0 (0%)
   Cardiac insufficiency 3 (3.1%) 2 (3.1%) 0 (0%) 0 (0%) 0 (0%) 0 (0%)
   Cancer 5 (5.2%) 2 (3.1%) 0 (0%) 0 (0%) 0 (0%) 0 (0%)
   Diabetes 29 (30.2%) 21 (32.3%) 18 (5.1%) 2 (4.4%) 0 (0%) 0 (0%)
   Asthma 1 (1.0%) 1 (1.5%) 11 (3.1%) 4 (8.9%) 7 (0%) 1 (2.9%)
   Othera 7 (7.3%) 6 (9.2%) 23 (6.5%) 3 (6.7%) 5 (0%) 2 (5.8%)
a

other chronic diseases reported by participants were dyslipidemia and thyroid disease. COVID-19 contact refers to those participants that had contact with a confirmed COVID-19 case in their household and/or during daily activities at work in a healthcare facility.