Table 1 Basic information of the sample
Variables | N | (%) | |
|---|---|---|---|
Total sample | 3302 | 100 | |
Age | < 30 years old | 1206 | 36.5 |
31–40 years old | 1511 | 45.8 | |
41–50 years old | 475 | 14.4 | |
51–60 years old | 110 | 3.3 | |
Gender | Male | 3197 | 96.8 |
Female | 105 | 3.2 | |
Having underlying diseases | 163 | 4.94 | |
Duration since last dose of vaccine (preceding lifting of Zero-COVID policy) | Within 1 month (30 days) | 431 | 13.1 |
1 to 6 months ago (30 to 180 days) | 205 | 6.21 | |
Over 6 months ago | 2666 | 80.7 | |
Symptom type | Fever | 3091 | 93.6 |
Highest body temperature: above 40℃ | 163 | 4.9 | |
39℃-40℃ | 1433 | 43.4 | |
38℃-39℃ | 1338 | 40.5 | |
below 38℃ | 157 | 4.8 | |
Cough | 3172 | 96.1 | |
Fatigue | 2977 | 90.2 | |
Muscle aches | 2889 | 87.5 | |
Expectoration | 2835 | 85.9 | |
Dizziness or headache | 2774 | 84.0 | |
Sore throat | 2444 | 74.0 | |
Runny nose | 2689 | 81.4 | |
Loss of smell/taste | 1778 | 53.8 | |
Shortness of breath | 1497 | 45.3 | |
Nausea and vomiting | 1171 | 35.5 | |
Diarrhea | 837 | 25.3 | |
Blurred vision | 383 | 11.6 | |
Number of symptoms during the infection | No symptom | 3 | 0.1 |
1–3 symptom | 47 | 1.4 | |
4–6 symptom | 444 | 13.4 | |
7–10 symptom | 2063 | 62.5 | |
Above 10 symptoms | 745 | 22.6 | |
Treatment ways | Home rest | 2744 | 83.1 |
Outpatient care | 400 | 12.1 | |
Emergency care | 103 | 3.1 | |
Hospitalization care | 55 | 1.7 |