Table 1.
Comparisons of baseline demographic and clinical characteristics across the four groups.
| Characteristics | Total (n = 108) | Group 1 (n = 27) | Group 2 (n = 28) | Group 3 (n = 27) | Group 4 (n = 26) | H/χ2 | P |
|---|---|---|---|---|---|---|---|
| Age (years) | 57.5 (41.5–69.0) | 54.0 (35.0–69.0) | 61.0 (52.5–70.0) | 64.0 (41.0–69.0) | 50.0 (43.0–65.8) | 2.609 | 0.456 |
| < 60 | 58 (53.70) | 18 (66.67) | 12 (42.86) | 12 (44.44) | 16 (61.54) | 4.723 | 0.193 |
| ≥ 60 | 50 (46.30) | 9 (33.33) | 16 (57.14) | 15 (55.56) | 10 (38.46) | ||
| Sex | |||||||
| Male | 56 (51.85) | 13 (48.15) | 16 (57.14) | 15 (55.56) | 12 (46.15) | 0.949 | 0.814 |
| Female | 52 (48.15) | 14 (51.85) | 12 (42.86) | 12 (44.44) | 14 (53.85) | ||
| Comorbidity | |||||||
| Hypertension | 30 (27.78) | 5 (18.52) | 9 (32.14) | 7 (25.93) | 9 (34.62) | 2.000 | 0.255 |
| Diabetes | 23 (21.30) | 6 (22.22) | 3 (10.71) | 8 (29.63) | 6 (23.08) | 3.052 | 0.384 |
| Coronary heart disease | |||||||
| ≥ 1 comorbidity | 9 (8.33) | 1 (3.70) | 3 (10.71) | 3 (11.11) | 2 (7.69) | 1.252 | 0.741 |
| 1–2 | 39 (36.11) | 8 (29.63) | 13 (46.42) | 9 (33.33) | 9 (34.62) | 5.344 | 0.501 |
| ≥ 3 | 16 (14.81) | 4 (14.81) | 1 (3.57) | 6 (22.22) | 5 (19.23) | ||
| Medications | |||||||
| 1–2 | 23 (21.30) | 2 (7.40) | 8 (28.57) | 5 (18.52) | 9 (34.62) | 6.075 | 0.416 |
| ≥ 3 | 18 (16.67) | 6 (22.22) | 4 (14.29) | 4 (14.81) | 7 (26.92) | ||
| Symptoms of illness onset | |||||||
| Fever | 59 (54.63) | 12 (44.44) | 13 (46.43) | 18 (66.67) | 16 (61.54) | 3.969 | 0.265 |
| Cough | 53 (49.07) | 11 (40.74) | 12 (42.86) | 13 (48.15) | 17 (65.38) | 3.960 | 0.266 |
Data are shown as median (interquartile range) or n (%).
P values were calculated by Kruskal–Wallis test, χ2 test or Fisher’s exact test, as appropriate.