Demographics and baseline characteristics of COVID-19 patients according to SARS‐CoV‐2 RNA detection in anal swab
| Characteristics | All Patients (136) n (%) | Patients with positive nasopharyngeal swab SARS-CoV-2 (120) n (%) | Patients with positive anal swab SARS-CoV-2 (45) n (%) |
| Age, year (mean±SD) | 44.41±12.72 | 44.17 ± (12.35) | 45.31 ±(13.26) |
| <40 n (%) | 48 (35.3) | 47 (39.2) | 16 (35.6) |
| 40–60 n (%) | 71 (52.2) | 56 (46.7) | 24 (53.3) |
| >60 n (%) | 17 (12.5) | 17 (14.2) | 5 (11.1) |
| Sex | |||
| Male, n (%) | 66 (48.5) | 59 (49.2) | 24 (53.3) |
| Female, n (%) | 70 (51.5) | 61 (50.8) | 21 (46.7) |
| Comorbidity | |||
| No comorbid | 53 (39) | 48 (40) | 22 (48.9) |
| <2 | 63 (46.3) | 57 (47.5) | 18 (40) |
| ≥2 | 20 (14.7) | 15 (12.5) | 5 (11.1) |
| Habits | |||
| Exercise, n (%) almost never | 64 (47.1) | 52 (43.3) | 23 (51.1) |
| Lack of exercise (<3x/ week,<30 min/session) | 72 (52.9) | 68 (56.7) | 22 (48.9) |
| Smoking, n (%) | |||
| Never | 115 (84.6) | 101 (84.2) | 38 (84.4) |
| Active smokers | 15 (11) | 14 (11.7) | 4 (8.9) |
| Former smokers | 6 (4.4) | 5 (4.2) | 3 (6.7) |
| Body mass index | |||
| <18.5 | 5 (3.7) | 3 (2.5) | 0 (0) |
| 18.5–24.9 | 69 (50.7) | 61 (50.8) | 30 (66.7) |
| ≥25 | 62 (45.6) | 56 (46.7) | 15 (33.3) |
| Radiologic findings | |||
| Pneumonia, n(%) | 100 (73.5) | 90 (75) | 38 (84.4) |
| Clinical outcome | |||
| ARDS, n (%) | 17 (12.5) | 14 (11.7) | 7 (15.6) |
| ICU referral, n (%) | 20 (14.7) | 18 (15) | 8 (17.8) |
| HFNO, n (%) | 14 (10.3) | 12 (10) | 4 (8.9) |
ARDS, acute respiratory distress syndrome; HFNO, high-flow nasal oxygen; ICU, intensive care unit.