Table 6.
Comparison between the omicron group and the Delta and Beta groups.
| Omicron (n = 310) | Delta (n = 96) | Beta (n = 326) | F/H/χ2 | P value | |
|---|---|---|---|---|---|
| Age(y) | 35 (11–53)a,b,c | 42.5 (28–56.5) | 52.5 (42–64) | 104.1613 | <0.0001 |
| Gender | |||||
| Female | 174 (56.13) | 53 (55.21) | 158 (48.47) | ||
| Male | 136 (43.87) | 43 (44.79) | 168 (51.53) | ||
| Vaccination, dose | 2 (2–3) | 2 (2–2) | 0 (0–0) | 556.4369 | <0.0001 |
| Clinical classifications | <0.0001 | ||||
| Asymptomatic | 10 (3.23)b,c | 4 (4.17) | 102 (31.29) | ||
| Mild | 179 (57.74) | 48 (50.00) | 53 (16.26) | ||
| Moderate | 118 (38.06) | 43 (44.79) | 171 (52.45) | ||
| Severe | 3 (0.97) | 1 (1.04) | 0 (0.00) | ||
| WBC, × 109/L | 5.405 (4.36–7.01)a,b,c | 6.18 (5–7.35) | 5.04 (4.05–6.25) | 24.6653 | <0.0001 |
| LYMPH, × 109/L | 1.48 (1–2.01) | 1.2 (0.5–2.5) | 1.555 (1.19–1.95) | 4.8005 | 0.0907 |
| N%, % | 55.35 (45.7–64.65) | 59.7 (50.8–67.2) | 56.95 (50.8–64.3) | 6.2088 | 0.0449 |
| CRP mg/L | 2.86 (0.91–7.37)b,c | 2.44 (0.50–7.68) | 0.5 (0.499–5.67) | 23.2142 | <0.0001 |
| IL–6, pg/mL | 6.5 (4.7–10.1) | 2.84 (1–5.62) | 5.22 (2.43–16.87) | 47.6800 | <0.0001 |
| PCT, ng/mL | 0.05 (0.04–0.08)a,b | 0.03 (0.02–0.04) | 0.03 (0.02–0.05) | 86.2541 | <0.0001 |
| CD4, cell/μL | 548.42 (366.23–788.86) | 618.5 (425–776) | 581.5 (462.5–841.5) | 1.5923 | 0.4511 |
| CD8, cell/μL | 334.28 (186.65–519.16) | 372 (286–526) | 347 (241–490) | 2.5548 | 0.2788 |
| IgG | 0.87 (0.24–20.99)a,b | 0.49 (0.43–0.58) | 0.39 (0.06–6.25) | 20.6799 | <0.0001 |
| IgM | 2.0625 (0.195–29.94)b,c | 3.15 (0.47–17.11) | 1.1 (0.08–7.41) | 22.0542 | <0.0001 |
| Symptoms | |||||
| Fever | 75.2992 | <0.0001 | |||
| Yes | 122 (39.35) a,b,c | 59 (61.46) | 58 (17.79) | ||
| No | 188 (60.65) | 37 (38.54) | 268 (82.21) | ||
| Cough | 73.0771 | <0.0001 | |||
| Yes | 151 (48.71) a,b,c | 82 (85.42) | 117 (35.89) | ||
| No | 159 (51.29) | 14 (14.58) | 209 (64.11) | ||
| Sore throat | 87.0197 | <0.0001 | |||
| Yes | 118 (38.06) b,c | 30 (31.25) | 24 (7.36) | ||
| No | 192 (61.94) | 66 (68.75) | 302 (92.64) | ||
| Feeble | 1.0775 | 0.5835 | |||
| Yes | 29 (9.35) | 7 (7.29) | 35 (10.74) | ||
| No | 281 (90.65) | 89 (92.71) | 291 (89.26) | ||
| Headache | 7.8568 | 0.0197 | |||
| Yes | 21 (6.77)a | 15 (15.63) | 25 (7.67) | ||
| No | 289 (93.23) | 81 (84.38) | 301 (92.33) | ||
| Muscular soreness | 0.4752 | ||||
| Yes | 16 (5.16) | 7 (7.29) | 14 (4.29) | ||
| No | 294 (94.84) | 89 (92.71) | 312 (95.71) | ||
| Stuffy nose | 36.9124 | <0.0001 | |||
| Yes | 28 (9.03) a,b,c | 20 (20.83) | 8 (2.45) | ||
| No | 282 (90.97) | 76 (79.17) | 318 (97.55) | ||
| Running nose | 18.8361 | <0.0001 | |||
| Yes | 31 (10.00) b,c | 17 (17.71) | 14 (4.29) | ||
| No | 279 (90.00) | 79 (82.29) | 312 (95.71) | ||
| Taste loss | 82.6751 | <0.0001 | |||
| Yes | 2 (0.65) a,c | 21 (21.88) | 9 (2.76) | ||
| No | 308 (99.35) | 75 (78.13) | 317 (97.24) | ||
| Anosmia | 93.0728 | <0.0001 | |||
| Yes | 5 (1.61) a,c | 23 (23.96) | 6 (1.84) | ||
| No | 305 (98.39) | 73 (76.04) | 320 (98.16) | ||
| Diarrhea | 22.1437 | <0.0001 | |||
| Yes | 10 (3.23) a,c | 14 (14.58) | 12 (3.68) | ||
| No | 300 (96.77) | 82 (85.42) | 314 (96.32) | ||
| Others | 254.8405 | <0.0001 | |||
| Yes | 21 (6.77) a,b,c | 81 (84.38) | 64 (19.63) | ||
| No | 289 (93.23) | 15 (15.63) | 262 (80.37) | ||
Note: "a" indicates that the difference between omicron group and delta group are statistically significant; "b" indicates that the difference between omicron group and beta group are statistically significant; "c" indicates that the difference between delta group and beta group are statistically significant.
WBC: white blood cell; LYMPH: lymphocyte count; N%: neutrophil percentage; CRP: C-reactive protein; IL-6: interleukin-6.
Data are shown as number (%), mean ± standard deviation, or mean (range). P < 0.05 considered the difference to be statistically significant in the three groups.