Table 2.
COVID-19 Patient Characteristics by Prefecture.
| Patient Characteristics | Hokkaido (n = 1269) | Kanagawa (n = 3023) | p-Value |
|---|---|---|---|
| Age, n (%) | |||
| 1–9 | 17 (1%) | 65 (2%) | 0.13 |
| 10–19 | 27 (2%) | 89 (3%) | 0.23 |
| 20–29 | 127 (10%) | 873 (28%) | <0.001 |
| 30–39 | 113 (9%) | 498 (16%) | <0.001 |
| 40–49 | 153 (12%) | 457 (15%) | 0.06 |
| 50–59 | 163 (13%) | 473 (15%) | 0.11 |
| 60–69 | 182 (15%) | 268 (9%) | <0.001 |
| 70–79 | 211 (17%) | 202 (6%) | <0.001 |
| 80–89 | 154 (13%) | 144 (5%) | <0.001 |
| 90–99 | 75 (6%) | 48 (2%) | <0.001 |
| 100+ | 5 (0.4%) | 0 (0%) | <0.001 |
| Male, n (%) | 595 (46.89%) | 1777 (56.90%) | <0.001 |
| Symptom 1, n (%) | |||
| Fever | 818 (84%) | 1919 (83%) | 0.01 |
| Cough | 395 (41%) | 861 (37%) | 0.08 |
| Pharyngitis | 174 (18%) | 419 (18%) | 0.86 |
| Rhinitis | 157 (16%) | 176 (8%) | <0.001 |
| Fatigue | 408 (42%) | 814 (35%) | <0.001 |
| Diarrhea | 93 (9%) | 132 (6%) | <0.001 |
| Headache | 185 (19%) | 459 (20%) | 0.57 |
| Pneumonia | 125 (13%) | 169 (7%) | <0.001 |
| Dyspnea | 123 (13%) | 171 (7%) | <0.001 |
| Loss of Taste (ageusia) | 167 (17%) | 406 (18%) | 0.77 |
| Loss of Smell (anosmia) | 17 (2%) | 320 (14%) | <0.001 |
| Loss of Appetite | 18 (2%) | 32 (1%) | 0.32 |
| Body Aches | 131 (14%) | 225 (10%) | 0.002 |
| Nausea/Vomiting | 27 (3%) | 43 (2%) | 0.10 |
| Phlegm | 21 (2%) | 71 (3%) | 0.15 |
| Chill | 5 (1%) | 56 (2%) | <0.001 |
| Asymptomatic cases, n (%) | 257 (20%) | 724 (24%) | 0.01 |
| Number of symptoms 1, mean (SD) | 2.96 (1.57) | 2.75 (1.33) | <0.001 |
| Number of transmissions, mean (SD) | 3.65 (5.41) | 1.76 (3.87) | <0.001 |
| Share of those transmitted, n (%) | 210 (17%) | 396 (13%) | 0.001 |
1 Excluding asymptomatic cases. The percentage of COVID-19 patients who fell into various groups based on age, type of symptom, number of symptoms, absence of symptoms (asymptomatic), and the number of people infected by and infector (number of transmissions) is provided. The percentages were based on the number of COVID-19 patients in each prefecture (1269 in Hokkaido and 3123 in Kanagawa).