| Characteristics | Non Smokers | Smokers | ||||||
| Referents | Covid-19 patients (n = 67) | Referents | Covid-19 patients (n = 72) | |||||
| Mild (n = 52) | Severe (n = 11) | Critical (n = 04) | Mild (n = 59) | Severe (n = 10) | Critical (n = 03) | |||
| Signs and Symptoms | ||||||||
| Fever | -------- | 52 | 11 | 04 | -------- | 59 | 09 | 03 |
| Cough | -------- | 49 | 10 | 04 | -------- | 53 | 07 | 03 |
| Chest distress | -------- | 48 | 09 | 03 | -------- | 45 | 07 | 03 |
| Myalgia or fatigue | -------- | 35 | 10 | 03 | -------- | 20 | 05 | 03 |
| Anorexia | -------- | 22 | 04 | 03 | -------- | 11 | 05 | 03 |
| Diarrhea | -------- | 20 | 06 | 03 | -------- | 12 | 04 | 03 |
| Dyspnea | -------- | 00 | 00 | 03 | -------- | 00 | 00 | 00 |
| Palpitation | -------- | 14 | 00 | 04 | -------- | 09 | 00 | 03 |
| Chest pain | -------- | 17 | 05 | 04 | -------- | 14 | 05 | 03 |