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. 2021 Jul 6;25(3):101595. doi: 10.1016/j.bjid.2021.101595

Table 1.

Demographic characteristics of patients with COVID-19 stratified by disease severity.

Characteristics Total (n = 44) Mild (n = 21) Moderate (n = 12) Severe (n = 11) P-value
Age (years), mean (SD) 57 ± 17 55 ± 20 56 ± 12 65 ± 16 0.27
Age 70 + [n (%)] 11 (25) 4 (19) 2 (16.6) 5 (45.4) 0.21
Age 60–69 [n (%)] 12 (27.2) 6 (28.5) 3 (25) 3 (27.2) 0.57
Age 41–59 [n (%)] 13 (29.5) 5 (23.8) 6 (50) 2 (18.1) 0.12
Age < 40 [n (%)] 8 (18.1) 6 (28.5) 1 (8.3) 1 (9) 0.17
Sex, M [n (%)] 26 (59) 11 (52.3) 8 (66.6) 7 (63.6) 0.33
Race (W/NW) 35/9 15/6 11/1 09/02 0.18
BMI (kg/m2), mean (SD) 23.4 ± 4.7 22 ± 3.7 25.7 ± 5.8 24 ± 5.0 0.08
Smoker, [n (%)] 7 (15.9) 4 (19) 0 3 (27.2) 0.09
Uses public transportation, [n (%)] 36 (81.8) 18 (85.7) 9 (75) 7 (63.6) 0.16
Positive contact, [n (%)]
 Public transportation 7 (15.9) 2 (9.5) 4 (33.3) 1 (09) 0.10
 Family members at home 17 (38.6) 7 (33.3) 6 (50) 4 (36.3) 0.28
 During hospitalization 4 (9) 1 (4.7) 0 3 (27.2) 0.09
 Not known 16 (36.3) 11 (52.3) 2 (16.6) 3 (27.2) 0.06
Primary causes of ESRD, n (%)
 Diabetic nephropathy 13 (29.5) 5 (23.8) 6 (50) 2 (18.1) 0.14
 Hypertensive kidney disease 17 (38.6) 6 (28.5) 4 (33.3) 7 (63.6) 0.06
 Others 14 (31.8) 10 (47.6) 2 (16.6) 2 (18.1) 0.07
Coexisting disorder, n (%)
 Cardiovascular disease 19 (43.1) 9 (42.8) 6 (50) 4 (36.3) 0.51
 Hypertension 39 (88.6) 19 (90.4) 11 (91.6) 9 (81.8) 0.42
 Diabetes mellitus 21 (47.7) 7 (33.3) 07 (58.3) 7 (63.6) 0.10
 Lung disease 7 (15.9) 4 (19) 1 (8.3) 2 (18.1) 0.38
 Cancer 6 (13.6) 1 (4.7)a 1 (8.3) 4 (36.3)a ap = 0.03
Dialysis modality, n (%)
 HD 40 (90) 21 (100)a 11 (91.6) 8 (72.7)a ap = 0.03
 PD 4 (9) 0a 1 (8.3) 3 (27.2)a ap = 0.03
Dialysis (months), Mean (SD) 40.7 ± 45.9 35.9 ± 31,8 37.2 ± 41.2 53.7 ± 71.2 0.39
Treatments, n (%)
 Glucocorticoids 14 (31.8) 0a,b 5 (41.6)a 9 (81.8)b ap  =  0.003
bp  =  0.0001
 Azithromycin 32 (72.7) 13 (61.9) 9 (75) 10 (90.9) 0.11
 ACE/ARB 21 (47.7) 9 (42.8) 7 (58.3) 5 (45.4) 0.48
 Prophylactic Heparin use during hospitalization 17 (38.6) 0a,b 9 (75)a 8 (72.7)b ap  =  0.0001
bp  =  0.0001
 Oxygen therapy 16 (36.3) 0a,b 5 (41.6)a,c 11 (100)b,c ap  =  0.003
bp  =  0.0001
cp =  0.004
 MV 7 (15.9) 0a 0 7 (63.6)a ap < 0.0001
Hospitalization, n (%) 20 (45.4) 0a,b 9 (75)a,c 11 (100)b,c ap < 0.0001
bp < 0.0001
cp =  0.001
ICU, n (%) 10 (22.7) 0 0 10 (90.9) ap < 0.0001
bp < 0.0001
Thromboembolic event, [n (%)] 10 (22.7) 5 (23.8) 3 (25) 2 (18.1) 1.0
*Incidence rate/10,000 954.4 455.5 260.3 238.6
*Mortality rate/10,000 151.8 0 0 151.8
*Fatality rate,% 15.9 0 0 63.6

M, male; W, white; NW, nonwhite; BMI, body mass index; ESRD, end stage renal disease; HD, hemodialysis; PD, peritoneal dialysis, ACE/ARB, renin angiotensin-aldosterone system (RAAS) inhibitors; MV, Mechanical ventilation; ICU, intensive care unit.

Calculations: The incidence, mortality and case fatality rates were calculated as follows: Incidence = number of cases from 03/01/2020 until the end of the current report (02/01/2021)/number of exposed people per 10,000. Mortality = number of deaths due to COVID-19/number of exposed people per 10,000. Fatality = (number of confirmed deaths due to COVID-19/number of confirmed COVID-19 cases) *100.