Characteristic | Pre-COVID-19 | COVID-19 | Post-COVID-19 | P value |
---|---|---|---|---|
Age, years | 7.31 (0.40–15.70) | 7.71 (0.020–14.89) | 7.85 (0.278–17.32) | 0.72 |
Men, n (%) | 68 (55.29) | 69 (53.08) | 377 (59.01) | 0.37 |
Median visit timea, days | 7 (3–30) | 10 (3–30) | 3 (1–15) | <  0.01 |
Cardiac symptoms, n (%) | Â | Â | Â | Â |
 Chest pain | 44 (35.77) | 42 (32.30) | 280 (43.89) | 0.03 |
 Chest tightness | 61 (49.60) | 75 (57.69) | 313 (49.06) | |
 Palpitation | 14 (11.38) | 11 (8.46) | 39 (6.11) | |
Comorbidity | Â | Â | Â | Â |
 Fever | 17 (13.82) | 0 (0.00) | 0 (0.00) | <  0.01 |
 Respiratory symptoms | 25 (20.32) | 24 (19.51) | 118 (18.50) | 0.88 |
 Gastrointestinal symptoms | 9 (7.31) | 7 (5.38) | 37 (5.60) | 0.76 |
 Syncope and dizzy | 4 (3.25) | 9 (6.92) | 34 (5.33) | 0.42 |
 Rash | 1 (0.81) | 1 (0.77) | 3 (0.47) | 0.85 |
Medical history | Â | Â | Â | Â |
 Surgery | 2 (1.63) | 3 (2.30) | 10 (1.57) | 0.84 |
 Chronic disease | 6 (4.88) | 8 (6.15) | 47 (7.37) | 0.57 |
 Positive family history | 8 (6.50) | 7 (5.38) | 36 (5.64) | 0.92 |
 Drug allergy | 3 (2.43) | 1 (0.77) | 13 (2.04) | 0.57 |