Table 1.
Demographic and clinical characteristics of patients who visited the clinic and underwent COVID-19 real-time RT-PCR test.
| Characteristic | Total | COVID-19 Real-Time RT-PCR Test | |
|---|---|---|---|
| Positive | Negative | ||
| Number | 360 | 17 (4.7) | 343 (95.3) |
| Age | |||
| Mean (SD) | 41.1 (18.8) | 39.6 (14.3) | 41.2 (19.0) |
| Range | 1–94 | 20–71 | 1–94 |
| ≤19 (%) | 35 (9.7) | 0 (0) | 35 (10.2) |
| 20–29 (%) | 77 (21.4) | 5 (29.4) | 72 (21.0) |
| 30–39 (%) | 54 (15.0) | 4 (23.5) | 50 (14.6) |
| 40–49 (%) | 89 (24.7) | 2 (11.8) | 85 (24.8) |
| 50–59 (%) | 41 (11.4) | 2 (11.8) | 39 (11.4) |
| 60–69 (%) | 33 (9.2) | 0 (0) | 33 (9.6) |
| 70–79 (%) | 21 (5.8) | 2 (11.8) | 19 (5.5) |
| 80 < (%) | 10 (2.8) | 0 (0) | 10 (2.9) |
| Sex | |||
| Female (%) | 176 (48.9) | 7 (41.2) | 169 (49.2) |
| Male (%) | 184 (51.1) | 10 (58.8) | 174 (50.7) |
| Days from symptom onset to examination | |||
| Mean (SD) | 3.4 (6.1) | 2.9 (1.8) | 3.4 (6.2) |
| Range | 0–74 | 0–6 | 0–74 |
| People around patients | |||
| Housemate (excluding the patient) (SD) | 2.4 (2.1) | 1.7 (1.3) | 2.5 (2.2) |
| Work colleague in same space (SD) | 15.5 (37.7) | 7.8 (10.4) | 15.9 (38.6) |
| People met within 1 week (SD) | 20.9 (29.7) | 17.6 (29.2) | 21.0 (29.7) |
| People without mask met with 1 week (SD) | 2.5 (6.4) | 4.2 (5.7) | 2.4 (6.4) |
| Symptom | |||
| Body temperature (SD) | 37.8 (1.0) | 37.5 (0.8) | 37.8 (1.0) |
| Headache (%) | 152 (42.2) | 12 (70.6) | 140 (40.8) |
| Sore throat (%) | 118 (32.8) | 7 (41.2) | 111 (32.4) |
| Dysgeusia (%) | 18 (5.0) | 5 (29.4) | 13 (3.8) |
| Anosmia (%) | 17 (4.7) | 8 (47.1) | 9 (2.6) |
| Nasal discharge (%) | 61 (16.9) | 5 (29.4) | 56 (16.3) |
| Cough (%) | 98 (27.2) | 9 (52.9) | 89 (25.9) |
| Sputum production (%) | 70 (19.4) | 8 (47.1) | 62 (18.1) |
| Nausea/vomiting (%) | 30 (8.3) | 1 (5.9) | 29 (8.5) |
| Diarrhea (%) | 62 (17.2) | 2 (11.8) | 60 (17.5) |
| Stomachache (%) | 38 (10.8) | 1 (5.9) | 37 (10.8) |
| Fatigue (%) | 173 (48.1) | 9 (52.9) | 164 (47.8) |
| Shortness of breath (%) | 42 (11.7) | 2 (11.8) | 40 (11.7) |
| Joint pain (%) | 66 (18.3) | 4 (23.5) | 62 (18.1) |
| Myalgia (%) | 58 (16.1) | 4 (23.5) | 54 (15.7) |
| Lack of appetite (%) | 88 (24.4) | 3 (17.6) | 85 (24.8) |
| Visited place | |||
| Close contact to patients with COVID-19 (%) | 27 (7.5) | 2 (13.3) | 25 (8.1) |
| Host club and/or hostess club (%) | 3 (0.8) | 0 (0) | 3 (1.0) |
| Nightclub (%) | 7 (1.9) | 2 (13.3) | 5 (1.6) |
| Pachinko parlor (%) | 9 (2.5) | 1 (6.7) | 8 (2.6) |
| Karaoke (%) | 8 (2.2) | 2 (13.3) | 6 (1.9) |
| Izakaya or Bar (%) | 27 (7.5) | 5 (33.3) | 22 (7.1) |
| Amusement arcade (%) | 9 (2.5) | 0 (0) | 9 (2.9) |
| Movie theater (%) | 7 (1.9) | 0 (0) | 7 (2.3) |
| Theater (%) | 1 (0.3) | 0 (0) | 1 (0.3) |
| Live music club (%) | 0 (0) | 0 (0) | 0 (0) |
| Amusement park (%) | 10 (2.8) | 0 (0) | 10 (3.2) |
| Hospital (%) | 84 (23.3) | 3 (20.0) | 80 (25.8) |
| Dental clinic (%) | 13 (3.6) | 0 (0) | 13 (4.2) |
| Beauty salon (%) | 27 (7.5) | 1 (6.7) | 26 (8.4) |
| Elderly day care center (%) | 11 (3.1) | 1 (6.7) | 10 (3.2) |
| Sports gym (%) | 9 (2.5) | 0 (0) | 9 (2.9) |
| Sports club (%) | 10 (2.8) | 1 (6.7) | 9 (2.9) |
| Church (%) | 0 (0) | 0 (0) | 0 (0) |
| Welfare facility (%) | 19 (5.3) | 0 (0) | 19 (6.1) |
| Train (%) | 29 (8.1) | 4 (26.7) | 25 (8.1) |
| Taxi (%) | 9 (2.5) | 1 (6.7) | 8 (2.6) |
| Other place people gathered (%) | 45 (12.5) | 0 (0) | 41 (13.2) |
| Outside the prefecture (%) | 67 (18.6) | 5 (33.3) | 63 (20.3) |
| N/D (%) | 6 (1.7) | 0 (0) | 6 (1.9) |
SD, standard deviation.