Table 2. Rate of hospital and ICU admission by characteristics of COVID-19 patients.
| Variables | COVID-19 patients (n = 7,969) | ||||||
|---|---|---|---|---|---|---|---|
| Hospital admission | ICU admission | ||||||
| No (n = 1,663) | Yes (n = 6,306) | P valuea | No (n = 6,951) | Yes (n = 1,018) | P valuea | ||
| Sex | < 0.001* | < 0.001* | |||||
| Male | 554 (17.4) | 2,633 (82.6) | 2,673 (83.9) | 514 (16.1) | |||
| Female | 1,109 (23.2) | 3,673 (76.8) | 4,278 (89.5) | 504 (10.5) | |||
| Age, yr | < 0.001* | < 0.001* | |||||
| 0–9 | 8 (10.0) | 72 (90.0) | 70 (87.5) | 10 (12.5) | |||
| 10–19 | 88 (32.8) | 180 (67.2) | 251 (93.7) | 17 (6.3) | |||
| 20–29 | 688 (33.7) | 1,355 (66.3) | 1,914 (93.7) | 129 (6.3) | |||
| 30–39 | 180 (22.1) | 635 (77.9) | 732 (89.8) | 83 (10.2) | |||
| 40–49 | 216 (21.3) | 799 (78.7) | 910 (89.7) | 105 (10.3) | |||
| 50–59 | 309 (19.9) | 1,243 (80.1) | 1,356 (87.4) | 196 (12.6) | |||
| 60–69 | 151 (12.8) | 1,033 (87.2) | 979 (82.7) | 205 (17.3) | |||
| 70–79 | 22 (3.6) | 587 (96.4) | 458 (75.2) | 151 (24.8) | |||
| 80+ | 1 (0.2) | 402 (99.8) | 281 (69.7) | 122 (30.3) | |||
| Region of residence | < 0.001* | < 0.001* | |||||
| Seoul | 9 (1.7) | 535 (98.3) | 442 (81.3) | 102 (18.8) | |||
| Daegu | 1,534 (29.7) | 3,638 (70.3) | 4,743 (91.7) | 429 (8.3) | |||
| Gyeonggi-do | 7 (1.6) | 444 (98.4) | 332 (73.6) | 119 (26.4) | |||
| Gyeongsangbuk-do | 82 (8.6) | 866 (91.4) | 829 (87.4) | 119 (12.6) | |||
| Others | 31 (3.6) | 823 (96.4) | 605 (70.8) | 249 (29.2) | |||
| Health insurance premium | < 0.001* | < 0.001* | |||||
| Medical aid | 121 (15.1) | 679 (84.9) | 658 (82.3) | 142 (17.8) | |||
| 1st quintile (lowest) | 424 (26.9) | 1,151 (73.1) | 1,407 (89.3) | 168 (10.7) | |||
| 2nd quintile | 257 (23.6) | 832 (76.4) | 982 (90.2) | 107 (9.8) | |||
| 3rd quintile | 261 (20.2) | 1,028 (79.8) | 1,134 (88.0) | 155 (12.0) | |||
| 4th quintile | 285 (21.3) | 1,051 (78.7) | 1,176 (88.0) | 160 (12.0) | |||
| 5th quintile (highest) | 315 (16.8) | 1,565 (83.2) | 1,594 (84.8) | 286 (15.2) | |||
| CCI Score | < 0.001* | < 0.001* | |||||
| 0 | 1,433 (24.7) | 4,371 (75.3) | 5,167 (89.0) | 637 (11.0) | |||
| 1 | 147 (14.7) | 854 (85.3) | 866 (86.5) | 135 (13.5) | |||
| 2 | 68 (8.8) | 706 (91.2) | 610 (78.8) | 164 (21.2) | |||
| 3+ | 15 (3.8) | 375 (96.2) | 308 (79.0) | 82 (21.0) | |||
| Death | < 0.001* | < 0.001* | |||||
| No | 1,662 (21.5) | 6,063 (78.5) | 6,826 (88.4) | 899 (11.6) | |||
| Yes | 1 (0.4) | 243 (99.6) | 125 (51.2) | 119 (48.8) | |||
ICU = intensive care unit, COVID-19 = coronavirus disease 2019, OR = odds ratio, CI = confidence interval, CCI = Charlson comorbidity index.
*P < 0.05, aP value for χ2 test.