Table 1 Between variants comparison of demographic characteristics and symptoms in people with positive test results in different variants
Variables | Initial (n = 547) | B.1.36 (n = 1262) | B.1.1.413 (n = 5418) | Alpha (n = 1806) | Delta (n = 5025) | Omicron (n = 1568) | P-value | |
|---|---|---|---|---|---|---|---|---|
Age | 49.00 ± 22.37 | 48.42 ± 23.94 | 48.42 ± 23.43 | 49.19 ± 26.05 | 46.44 ± 25.09 | 44.33 ± 26.37 |  < 0.001 | |
Sex | Male | 1638 (55.8) | 2856 (51.5) | 5424(51.3) | 3685(48.9) | 7813(48) | 1823(47) |  < 0.001 |
Female | 1295(44.2) | 2692(48.5) | 5139(48.7) | 3855(51.1) | 8473(52) | 2054(53) | ||
Comorbidities | ||||||||
 Diabetes | 73(13.8) | 131(10.5) | 510(9.4) | 182(10.1) | 366(7.3) | 101(6.3) |  < 0.001 | |
 Chronic lung disease | 25(4.7) | 28(2.2) | 145(2.7) | 58(3.2) | 107(2.1) | 37(2.3) | 0.003 | |
 Cardiovascular disease | 117(22.1) | 213(17.1) | 863(15.9) | 305(16.9) | 641(12.8) | 177(11.1) |  < 0.001 | |
 Renal disease | 20(3.8) | 21(1.7) | 70(1.3) | 16(0.9) | 63(1.3) | 23(1.4) | 0.017 | |
 Chorionic Liver disease | 8(1.5) | 6(0.5) | 0 | 0 | 0 | 0 |  < 0.001 | |
 Malignancies | 4(0.8) | 9(0.7) | 32(0.6) | 8(0.4) | 28(0.6) | 10(0.6) | 0.884 | |
 Immunodeficiency | 0 | 8(0.6) | 21(0.4) | 6(0.3) | 20(0.4) | 10(0.6) | 0.322 | |
Signs and symptoms | ||||||||
 Cough | 279(52.6) | 483(38.7) | 2467(45.4) | 811(45) | 2097(41.8) | 664(41.6) |  < 0.001 | |
 Chills | 0 | 0 | 0 | 259(14.4) | 1036(20.7) | 300(18.8) |  < 0.001 | |
 Myalgia | 126(23.8) | 407(32.6) | 2402(44.2) | 657(36.4) | 2199(43.9) | 708(44.4) |  < 0.001 | |
 Taste/smell disorder | 0 | 0 | 0 | 33(1.8) | 193(3.8) | 35(2.2) |  < 0.001 | |
 Diarrhoea | 23(4.3) | 96(7.7) | 327(6) | 69(3.8) | 189(3.8) | 31(1.9) |  < 0.001 | |
 Dyspnea | 210(39.6) | 463(37.1) | 2172(40) | 812(45) | 2101(41.9) | 540(33.8) |  < 0.001 | |
 Headache | 90(17) | 252(20.2) | 1361(25.1) | 303(16.8) | 1077(21.5) | 388(24.3) |  < 0.001 | |
 Sore Throat | 49(9.2) | 127(10.2) | 633(11.7) | 214(11.9) | 657(13.1) | 460(28.8) |  < 0.001 | |
 Fever | 102(19.2) | 213(17.1) | 1361(25.1) | 361(20) | 1101(22) | 231(14.5) |  < 0.001 | |