Baseline demographic characteristic data of the different COVID-19 risk groups
| Low risk n=289 | Intermediate risk n=141 | High risk n=66 | Very high risk n=10 | P value | ||
| Risk groups | 289 (57.1) | 141 (27.9) | 66(13) | 10(2) | <0.001 | |
| Age groups (years) | 18–49 | 275 (95.2) | 64 (45.4) | 1 (1.5) | 0 (0) | <0.001 |
| 50–59 | 14 (4.8) | 51 (36.2) | 8 (12.1) | 0 (0) | ||
| 60–69 | 0 (0.0) | 23 (16.3) | 22 (33.3) | 2 (20) | ||
| 70–79 | 0 (0.0) | 3 (2.1) | 17 (25.8) | 4 (40) | ||
| >=80 | 0 (0.0) | 0 (0) | 18 (27.3) | 4 (40) | ||
| Gender | Male | 80 (27.2) | 53 (37.6) | 26 (39.4) | 7 (70) | 0.006 |
| Female | 209 (72.3) | 88 (62.4) | 40 (60.6) | 3 (30) | ||
| Nationality | Non-Saudi | 184 (64.1) | 81 (54.7) | 17 (25.8) | 1 (10) | <0.001 |
| Saudi | 103 (35.9) | 60 (42.6) | 49 (74.2) | 9 (90) | ||
| Job | Jobless | 93 (32.2) | 68 (48.2) | 58 (87.9) | 10(100) | <0.001 |
| Working | 42 (14.5) | 53 (37.6) | 7 (10.6) | 0 (0) | ||
| HCW | 154 (53.3) | 20 (14.2) | 1 (1.5) | 0 (0) | ||
| Smoking | 69 (23.9) | 29 (20.6) | 14 (21.2) | 1 (10) | 0.665 | |
| History of contact | 118 (40.8) | 37 (26.2) | 20 (20.3) | 4 (40) | 0.021 | |
| History of travel | 2 (0.7) | 0 (0.0) | 2 (3) | 0 (0) | 0.141 | |
| Number of comorbidities | No | 230 (79.6) | 33 (23.4) | 4 (6.1) | 0 (0) | <0.001 |
| 1 | 46 (15.9) | 44 (31.2) | 8 (12.1) | 0 (0) | ||
| ≥2 | 13 (4.6) | 64 (45.4) | 54 (81.8) | 10(100) | ||
| Comorbidities (n (%)) | HTN | 37 (12.8) | 75 (53.2) | 56 (84.8) | 10(100) | <0.001 |
| Diabetes | 16 (5.5) | 70 (49.6) | 49 (74.2) | 9 (90) | <0.001 | |
| Cardiac | 1 (0.3) | 14 (9.9) | 25 (37.9) | 3 (30) | <0.001 | |
| Renal | 6 (2.1) | 21 (14.9) | 24 (36.4) | 5 (50) | <0.001 | |
| Chest diseases | 3 (1) | 7 (5) | 10 (15.2) | 3 (30) | <0.001 | |
| Others | 9 (3.1) | 13 (9.2) | 18 (27.3) | 6 (60) | <0.001 | |
HGW, healthcare worker; HTN, hypertension.