Table 1.
Baseline characteristics in SARS-Cov-2-infected and -non-infected nephrologists
| [AQ] | Total (n = 327) |
Infected (n = 62) |
Non-infected (n = 265) |
P-value |
|---|---|---|---|---|
| Sex (female), n (%) | 217 (66) | 43 (69) | 174 (66) | 0.579 |
| Age (years)a | 46 ± 11 | 42 ± 12 | 46 ± 10 | 0.004 |
| Hypertension, n (%) | 27 (8) | 3 (5) | 24 (9) | 0.277 |
| Diabetes mellitus, n (%) | 4 (1) | 0 (0) | 4 (1) | 0.330 |
| Dyslipidaemia, n (%) | 49 (15) | 8 (13) | 41 (15) | 0.610 |
| Hypothyroidism, n (%) | 18 (5%) | 1 (2) | 17 (6) | 0.136 |
| Body mass index (kg/m2)a | 24 ± 4 | 23 ± 3 | 24 ± 4 | 0.059 |
| ABO blood group, n (%)b | 0.014 | |||
| A or AB | 163 (51) | 33 (56) |
130 (50) |
|
| B | 33 (10) | 11 (19) |
22 (8) |
|
| O | 124 (39) | 15 (25) | 109 (42) | |
| Rh blood group (positive), n (%) | 251 (78) | 46 (78) | 205 (79) | 0.922 |
| Chronic kidney disease, n (%) | ||||
| eGFR <60 mL/min/1.73 m2 | 1 (<1) | 0 (0) | 1 (<1) | 0.628 |
| Albuminuria >30 mg/g urinary creatinine | 1 (<1) | 0 (0) | 1 (<1) | 0.640 |
| RAAS blockers, n (%) | 23 (7) | 2 (3) | 21 (8) | 0.191 |
| Working time during the pandemic, n (%) | 0.751 | |||
| <10 weeks | 13 (4) | 1 (2) |
12 (4) |
|
| 10–20 weeks | 10 (3) | 2 (3) |
8 (3) |
|
| 21–30 weeks | 108 (33) | 20 (32) |
88 (33) |
|
| >30 weeks | 196 (60) | 39 (62) | 157 (59) | |
| Work in non-nephrology units, n (%) | 122 (37) | 30 (48) | 92 (35) | 0.045 |
| Place of usual work, n (%) | 0.894 | |||
| Hospital | 291 (89) | 55 (89) |
236 (89) |
|
| Dialysis centre | 23 (7) | 5 (8) |
18 (7) |
|
| Both | 13 (4) | 2 (3) | 11 (4) | |
| On-call shifts n, % | 243 (74) | 46 (74) | 197 (74) | 0.981 |
| Exposure to COVID-19 patients, n (%)c | <0.001 | |||
| 0–25% | 204 (62) | 26 (42) |
179 (67) |
|
| 26–50% | 52 (16) | 14 (23) |
38 (14) |
|
| 51–75% | 29 (9) | 5 (8) |
24 (9) |
|
| 76–100% | 42 (13) | 17 (27) | 25 (9) | |
| Lack of appropriate PPE, n (%)d | 144 (44) | 43 (69) | 101 (38) | <0.001 |
a
Mean ± standard deviation.
b
Per cent of total working period.
c
Personal opinion of the nephrologist.
d
Complete blood group data is expressed in Supplementary data, Table S1.
GFR, estimated glomerular filtration rate; RAAS, renin–angiotensin–aldosterone system.