Table 2.
Patient vital signs and symptoms at the time of the consultation, according to the wave of the pandemic.
| Alpha Wave * (n = 55) | Delta Wave † (n = 273) | p | |
| Vital signs | |||
| Temperature (°C), median (IQR) | 37.2 (36.6–37.9) | 37.9 (37.3–38.5) | <0.001 |
| Heart rate, median (IQR) | 87 (80–92) | 90 (84–102) | 0.001 |
| Mean arterial pressure, median (IQR) | 95.3 (81.7–103.2) | 89.8 (81.8–96.7) | 0.13 |
| SpO2 (%) under room air, median (IQR) | 92 (90–94) | 92 (90.5–93) | 0.99 |
| Nasal cannula oxygen support (L/min) | 1.5 (0.5–3) | 2 (1.5–3) | 0.01 |
| SpO2 (%) 1 h after oxygenation, median (IQR) | 95 (94–97) | 96 (95–97) | 0.06 |
| Japan Coma Scale, n (%) | 0.07 | ||
| Clear | 48 (87.3) | 257 (94.1) | |
| Delirium | 7 (12.7) | 15 (5.5) | |
| Symptoms, n (%) | |||
| Shortness of breath or difficulty breathing | 39 (70.9) | 207 (75.8) | 0.45 |
| Fever or feeling feverish/having chills | 43 (78.2) | 171 (62.6) | 0.02 |
| Fatigue (tiredness) | 39 (70.9) | 77 (28.2) | <0.001 |
| Cough | 34 (61.8) | 190 (69.6) | 0.26 |
| Diarrhea | 15 (27.3) | 28 (10.3) | 0.002 |
| Muscle pain or body aches | 12 (21.8) | 22 (8.1) | 0.005 |
| Headache | 11 (20.0) | 36 (13.2) | 0.21 |
| Vomiting | 11 (20.0) | 39 (14.3) | 0.30 |
| Sore throat | 10 (18.2) | 19 (7.0) | 0.01 |
| Change in or loss of taste or smell | 8 (14.6) | 18 (6.6) | 0.06 |
| Runny or stuffy nose | 2 (3.6) | 13 (4.8) | >0.99 |
| Portable chest X-ray finding, n (%) | |||
| No abnormality | 17 (100) ‡ | 38 (100) ‡ | |
| Electrocardiogram, n (%) | |||
| No abnormality | 17 (100) ‡ | 38 (100) ‡ |
* The Alpha wave occurred between March 2021 and June 2021. † The Delta wave lasted from July 2021 until December 2021. ‡ The percentages were based on the number of participants who underwent portable radiography and electrocardiography. IQR—interquartile range.