Table 3.
Demographics stratified by admission to critical care. Values are numbers (percentages) unless stated otherwise
| Variable | Standard ward admission (n=516; 81.6%) | Critical care admission (n=116; 18.4%) | P value* |
|---|---|---|---|
| Median (interquartile range) age, years | 3.7 (0.3-13.8) | 8.9 (0.4-13.5) | 0.29 |
| Neonate (<1 month): | 0.007 | ||
| No | 482 (93.4) | 99 (85.3) | |
| Yes | 34 (6.6) | 17 (14.7) | |
| Age group, years: | <0.001 | ||
| <1 | 186 (36.0) | 31 (26.7) | |
| 1-4 | 90 (17.4) | 15 (12.9) | |
| 5-9 | 73 (14.1) | 18 (15.5) | |
| 10-14 | 58 (11.2) | 33 (28.4) | |
| 15-19 | 109 (21.1) | 19 (16.4) | |
| Sex at birth: | 0.300 | ||
| Male | 286 (55.4) | 71 (61.2) | |
| Female | 229 (44.4) | 45 (38.8) | |
| Missing | 1 (0.2) | 0 (0.0) | |
| Ethnicity: | 0.001 | ||
| White | 282 (54.7) | 41 (35.3) | |
| Black | 36 (7.0) | 19 (16.4) | |
| South Asian | 49 (9.5) | 13 (11.2) | |
| Other | 92 (17.8) | 26 (22.4) | |
| Missing | 57 (11.0) | 17 (14.7) | |
| Admitted >5 days before symptom onset: | 0.009 | ||
| No | 437 (84.7) | 92 (79.3) | |
| Yes | 36 (7.0) | 18 (15.5) | |
| Missing | 43 (8.3) | 6 (5.2) | |
| Any comorbidity: | 0.009 | ||
| No/unknown | 306 (59.3) | 53 (45.7) | |
| Yes | 210 (40.7) | 63 (54.3) | |
| Prematurity†: | 0.001 | ||
| No | 135 (26.2) | 15 (12.9) | |
| Yes | 30 (5.8) | 15 (12.9) | |
| Missing | 351 (68.0) | 86 (74.1) | |
| Respiratory comorbidity: | 0.019 | ||
| No | 470 (91.1) | 103 (88.8) | |
| Yes | 21 (4.1) | 12 (10.3) | |
| Missing | 25 (4.8) | 1 (0.9) | |
| Cardiac comorbidity: | 0.018 | ||
| No | 468 (90.7) | 102 (87.9) | |
| Yes | 25 (4.8) | 13 (11.2) | |
| Missing | 23 (4.5) | 1 (0.9) | |
| Obesity: | 0.028 | ||
| No | 477 (92.4) | 108 (93.1) | |
| Yes | 10 (1.9) | 7 (6.0) | |
| Missing | 29 (5.6) | 1 (0.9) | |
| Immunosuppressant use before presentation‡: | 1.00 | ||
| No | 443 (85.9) | 101 (87.1) | |
| Yes | 43 (8.3) | 10 (8.6) | |
| Missing | 30 (5.8) | 5 (4.3) |
*
Categorical variables analysed using Fisher’s exact test and continuous variables by Kruskal-Wallis test.
†
Defined as birth before completion of 37 weeks’ gestation.
‡
Includes oral but not inhaled corticosteroids.