| Variables | Total (n = 779) | Elderly patients (n = 135) | Younger patients (n = 644) | p-value |
| Age (year) |
|
|
|
|
| Median (IQR) [Min - Max] | 41 (32 - 54) [18 - 96] | 70 (64 - 74) [60 - 96] | 38 (30 - 46) [18 - 59] | <0.0001 |
| Gender (%) |
|
|
|
|
| Male | 390 (50.1) | 80 (59.3) | 310 (48.1) | 0.019 |
| Female | 389 (49.9) | 55 (40.7) | 334 (51.9) | |
| Activity (%) |
|
|
|
|
| Public servant | 339 (43.5) | 29 (21.5) | 311 (48.3) | <0.0001 |
| Student | 122 (15.7) | 0 (0.0) | 122 (18.9) | <0.0001 |
| Informal sector worker | 99 (12.7) | 7 (5.2) | 92 (14.3) | 0.004 |
| Unemployed | 219 (28.1) | 99 (73.3) | 119 (18.5) | <0.0001 |
| Place of activity (%) |
|
|
|
|
| Outside of hospital | 647 (83.1) | 133 (98.5) | 514 (79.8) | <0.0001 |
| Hospital | 132 (16.9) | 2 (1.5) | 130 (20.2) | |
| Comorbidity (%) |
|
|
|
|
| No | 479 (61.5) | 54 (40.0) | 425 (66.0) | <0.0001 |
| Yes | 300 (38.5) | 81 (60.0) | 219 (34.0) | |
| Type of comoridity (%) |
|
|
|
|
| Chronic heart disease | 97 (32.3) | 50 (61.7) | 47 (21.5) | <0.0001 |
| Diabetes | 43 (14.3) | 19 (23.4) | 24 (10.9) | 0.006 |
| Asthma | 34 (11.3) | 5 (6.2) | 29 (13.2) | 0.086 |
| Chronic blood disease | 20 (6.7) | 5 (6.2) | 15 (6.8) | 0.834 |
| Chronic kidney disease | 10 (3.3) | 2 (2.5) | 8 (3.7) | 0.612 |
| Chronic lung disease | 8 (2.7) | 4 (4.9) | 4 (1.8) | 0.138 |
| HIV positive | 7 (2.3) | 1 (1.2) | 6 (2.7) | 0.444 |
| Obesity | 3 (1.0) | 1 (1.2) | 2 (0.9) | 0.851 |
| Contact case (%) |
|
|
|
|
| No | 676 (35.4) | 131 (97.0) | 545 (84.6) | <0.0001 |
| Yes | 103 (64.6) | 4 (3.0) | 99 (15.4) |