- Nationality and comorbidities among the patients (study group).
| Comorbidities | n | % |
|---|---|---|
| Nationality | ||
| Saudi | 363 | 83.3 |
| Non-Saudi | 73 | 16.7 |
| Chronic hypertension | ||
| Yes | 12 | 2.7 |
| No | 434 | 97.3 |
| Bronchial asthma | ||
| Yes | 16 | 3.7 |
| No | 419 | 96.3 |
| Autoimmune diseases | ||
| Yes | 2 | 0.5 |
| No | 433 | 99.5 |
| Hyperthyroidism | ||
| Yes | 3 | 0.7 |
| No | 432 | 99.3 |
| Hypothyroidism | ||
| Yes | 43 | 9.9 |
| No | 392 | 90.1 |