Table 1.
Characteristics of the patients.
| All patients (N = 207) | |
|---|---|
| Basic information | |
| Age, years [median (25%, 75%)] | 50 (40, 71) |
| Male gender, n (%) | 121 (59) |
| Nationality | |
| Asia including Japan, n (%) | 185 (89) |
| Japan, n (%) | 158 (76) |
| Europe, n (%) | 5 (2) |
| North or South America | 12 (6) |
| Oceania, n (%) | 5 (2) |
| Smoking status | |
| Current or ex-smoker, n (%) | 66 (32) |
| Never smoker, n (%) | 141 (68) |
| Comorbidities | |
| Any, n (%) | 101 (49) |
| Cardiovascular disease, n (%) | 12 (6) |
| Diabetes, n (%) | 12 (6) |
| Chronic respiratory disorder, n (%) Requirement of HOT, n (%) |
20 (10) 2 (1) |
| Malignancy, n (%) | 6 (3) |
| Asymptomatic cases, n (%) | 40 (19) |
| Symptomatic cases, n (%) | 167 (81) |
| Patients with respiratory failureexcept for those who required HOT, n (%) | 8 (4) |
| Nasal canula | 5 (2) |
| Oxygen mask | 3 (1) |
| Time from symptom onset to presentation, days median[median (25%, 75%)] | 5 (4, 8) |
| Symptoms on admission | |
| Fever, n (%) | 63 (30) |
| Cough, n (%) | 79 (38) |
| Headache, n (%) | 26 (13) |
| Fatigue, n (%) | 44 (21 |
| Sore throat, n (%) | 21 (10) |
| Diarrhea, n (%) | 17 (8) |
| Nasal discharge, n (%) | 26 (13) |
| Dyspnea, n (%) | 24 (12) |
| Laboratory findings on admission | |
| White blood cell, 104/μL [median (25%,75%)] |
5290 (4060, 6530) |
| Lymphocyte count, 104/μL [median (25%,75%)] |
1252 (860, 1694) |
| Platelet, 104/μL[median (25%,75%)] | 21.2 (17.5, 26.6) |
| Albumin, g/dL | 4.1 (3.8, 4.3) |
| CRP, mg/dL[median (25%,75%)] | 0.73 (0.13, 2.79) |
| BUN, mg/dL[median (25%,75%)] | 13 (11, 17) |
| LDH (mg/L), IU/L [median (25%,75%)] |
211 (177, 266) |
| AST, IU/L[median (25%,75%)] | 27 (21, 37) |
| ALT, IU/L[median (25%,75%)] | 27 (17, 42) |
| Outcome | |
| Severe patients, n (%) | 40 (19) |
| Nasal canula or oxygen mask, n (%) | 23 (11) |
| Non-invasive positive pressure ventilationor high flow nasal, n (%) | 11 (5) |
| Intubation, n (%) | 6 (3) |
| Death, n (%) | 3 (1) |
HOT = home oxygen therapy; CRP= C-reactive protein; BUN = blood urea nitrogen; LDH = lactate dehydrogenase; AST = aspartate aminotransferase; ALT = alanine aminotransferase.