| Asymptomatic N = 705 | Mild N = 286 | Severe N = 166 | P Value*Asymptomatic versus mild | P Value*mild versus severe | Overall N = 1157(% or IQR) |
---|---|---|---|---|---|---|
Clinical characteristics | Â | Â | Â | Â | Â | Â |
Sex | Â | Â | Â | 0.292 | 0.736 | Â |
 Male | 365(51.77%) | 159(55.59%) | 95(57.22%) |  |  | 619(53.50) |
 Female | 340(48.22%) | 127(44.40%) | 71(42.77%) |  |  | 538(46.49) |
Age | 30(21.25, 46.00) | 33(24,46) | 62(44.50,72.50) | 0.783 | < 0.001 |  |
Disease onset time (day) | 1.00(1.00,1.00) | 1.00(1.00,1.00) | 1.50(1.00,6.00) | 0.753 | < 0.001 |  |
COVID-19 vaccine | Â | Â | Â | Â | Â | Â |
 0-dose | 121(17.16%) | 43(15.03%) | 153(92.16%) | 0.451 | < 0.001 | 317(27.39) |
 1-dose | 15(2.12%) | 7(2.44%) | 1(0.60%) | 0.813 | 0.194 | 23(1.98) |
 2-doses | 241(34.18%) | 122(42.65%) | 6(3.61%) | 0.013 | < 0.001 | 369(31.89) |
 3-doses | 328(46.52%) | 114(39.86%) | 6(3.61%) | 0.057 | < 0.001 | 448(38.72) |
Time from last vaccine dose (day) | 83(49.00,161.00) | 130(56.00,175.00) | 86(55.00,153.5.00) | 0.06 | 0.06 | Â |
Comorbidities | Â | Â | Â | Â | Â | Â |
 Hypertension | 64(9.07%) | 23(8.04%) | 87(52.40%) | 0.624 | < 0.001 | 174(15.03) |
 Coronary artery disease | 18(2.55%) | 14(4.89%) | 40(24.09%) | 0.073 | < 0.001 | 72(6.22) |
 Diabetes | 30(4.25%) | 10(3.49%) | 44(26.50%) | 0.602 | < 0.001 | 84(7.26) |
 COPD | 2(0.28%) | 3(1.04%) | 14(8.43%) | 0.148 | 0.012 | 19(1.64) |
 Cerebrovascular disease | 11(1.56%) | 3(1.04%) | 43(25.90%) | 0.58 | < 0.001 | 57(4.92) |
 Chronic renal disease | 7(0.99%) | 2(0.69%) | 14(8.43%) | 0.737 | < 0.001 | 23(1.98) |
 Malignant tumor | 9(1.27%) | 4(1.39%) | 19(11.44%) | 1 | 0.004 | 32(2.76) |
 Rheumatic disease | 4(0.56%) | 1(0.34%) | 2(1.20%) | 1 | 0.39 | 7(0.60) |
Symptoms | Â | Â | Â | Â | Â | Â |
Fever | Â | 132(46.20%) | 48(28.91%) | Â | 0.005 | 180(15.55) |
Cough | Â | 168(58.70%) | 62(37.34%) | Â | 0.002 | 230(19.87) |
Shortness of breath |  | 0 | 12(7.22%) |  | < 0.001 | 12(1.03) |
Fatigue | Â | 29(10.10%) | 12(7.22%) | Â | 0.299 | 41(3.54) |
Nausea or vomiting | Â | 2(0.70%) | 6(3.61%) | Â | 0.023 | 8(0.69) |
Diarrhea | Â | 3(1.00%) | 2(1.20%) | Â | 0.882 | 5(0.43) |
Sore throat |  | 91(31.80%) | 5(3.01%) |  | < 0.001 | 96(8.29) |
Laboratory findings | Â | Â | Â | Â | Â | Â |
WBC (10^9/L) | 4.80(3.92,6.31) | 4.68(4.06,6.85) | 6.71(4.72,9.60) | 0.582 | < 0.001 | 5.39 (4.23,7.59) |
EOS (10^9/L) | 0.06(0.02,0.13) | 0.05(0.01,0.09) | 0.01(0.00,0.03) | 0.065 | < 0.001 | 0.04 (0.01,0.08) |
Neutrophils (10^9/L) | 2.59(1.94, 3.66) | 2.87(1.97,4.31) | 4.74(3.03,7.76) | 0.873 | < 0.001 | 3.40 (2.31,5.24) |
Lymphocytes (10^9/L) | 1.47(1.00,1.47) | 1.56(0.75,2.14) | 0.84(0.53,1.29) | 0.319 | < 0.001 | 1.29 (0.76,1.63) |
Monocytes (10^9/L) | 0.51(0.39,0.66) | 0.55(0.39, 0.7) | 0.50(0.35,0.75) | 0.042 | 0.772 | 0.52 (0.38,0.70) |
CRP (mg/L) | 1.96(0.40,3.92) | 2.68(0.90,3.25) | 30.85(6.21,76.53) | 0.782 | < 0.001 | 14.92(2.50,27.90) |
D-Dimer(ug/ml) | 0.23(0.18, 0.34) | 0.49(0.30,0.71) | 1.42(0.93,2.84) | 0.096 | < 0.001 | 0.71 (0.47,1.30) |
NLR | 1.82(1.18, 2.84) | 2.16(1.24, 3.65) | 5.23 (2.74,11.92) | 0.231 | < 0.001 | 3.07 (1.72,6.14) |
CD4 (cell/ul) |  | 720.50(553.59, 943.25) | 292.52(178.60,482.76) |  | < 0.001 | 366.09(366.09,713.01) |
CD8 (cell/ul) |  | 458.50(360.75, 609.00) | 156.00(87.88,342.32) |  | < 0.001 | 307.25(224.32,475.66) |
CD4/CD8 | Â | 720.50(553.59, 943.25) | 292.52(178.60,482.76) | Â | 0.074 | 506.51(366.10,713.01) |
Outcome | Â | Â | Â | Â | Â | Â |
 HFNO | 0 | 0 | 40(24.10%) |  |  | 40(3.45) |
 Mechanical ventilation | 0 | 0 | 126(75.90%) |  |  | 126(10.89) |
 Death | 0 | 0 | 69(41.57%) |  |  | 69(5.96) |