Table 1.
Patient characteristics at ICU admission.
| Overall | ICU survivor | ICU non-survivor | p | |
|---|---|---|---|---|
| n = 639 | n = 301 | n = 97 | ||
| Demographics | ||||
| Age, years | 63 [53 - 71] | 62 [54 - 70] | 71 [62 - 78] | <0·001 |
| Age stratification | <0·001 | |||
| <18 | 7 (1·1) | 1 (0·3) | 0 (0·0) | |
| 18–30 | 46 (7·2) | 2 (0·7) | 1 (1·0) | |
| 31–40 | 21 (3·3) | 16 (5·3) | 1 (1·0) | |
| 41–50 | 63 (9·9) | 39 (13·0) | 3 (3·1) | |
| 51–60 | 138 (21·6) | 71 (23·6) | 16 (16·5) | |
| 61–70 | 191 (29·9) | 103 (34·2) | 27 (27·8) | |
| 71–80 | 139 (21·8) | 55 (18·3) | 37 (38·1) | |
| 81–90 | 32 (5·0) | 12 (4·0) | 12 (12·4) | |
| >90 | 1 (0·2) | 1 (0·3) | 0 (0·0) | |
| Sex, male | 447 (75·1) | 231 (76·7) | 69 (71·1) | 0·327 |
| BMI, kg m-2 | 27·7 [25·2 - 31·1] | 27·8 [25·3 - 31·2] | 27·8 [25·0 - 30·5] | 0·589 |
| Health care workers | 21 (3·6) | 14 (4·7) | 2 (2·1) | 0·424 |
| Smoking status | 0·298 | |||
| Never Smoked | 327 (67·3) | 181 (60·1) | 47 (48·5) | |
| Smoker or previous smoker | 159 (32·7) | 74 (24·6) | 28 (28·9) | |
| ICU-admission from | 0·629 | |||
| Emergency room | 148 (31·0) | 74 (24·6) | 30 (30·9) | |
| Normal ward | 182 (38·1) | 101 (33·6) | 31 (32·0) | |
| IMC | 68 (14·2) | 26 (8·6) | 7 (7·2) | |
| Other ICU | 80 (16·7) | 32 (10·6) | 14 (14·4) | |
| Time from symptoms onset to hospitalization, days | 7 [4 - 9] | 7 [4 - 9] | 5 [3 - 7] | 0·099 |
| Time from hospitalization to ICU admission, days | 1 [0 - 3] | 1 [0 - 3] | 1 [0 - 3] | 0·352 |
| Patients with comorbidities | 315 (49·3) | 143 (47·5) | 69 (71·1) | <0·001 |
| Chronic arterial hypertension | 282 (44·1) | 136 (45·2) | 57 (58·8) | 0·027 |
| Ischemic heart disease | 81 (12·7) | 34 (11·2) | 21 (21·6) | 0·016 |
| Other heart disease | 71 (11·1) | 31 (10·3) | 20 (20·6) | 0·014 |
| Diabetes mellitus | 147 (23·0) | 70 (23·3) | 31 (32·0) | 0·114 |
| Chronic pulmonary disease | 80 (12·5) | 39 (13·0) | 18 (18·6) | 0·229 |
| Immunosuppression | 73 (11·4) | 30 (10·0) | 21 (21·6) | 0·005 |
| Country | 0·001 | |||
| Switzerland | 455 (71·2) | 204 (67·8) | 58 (59·8) | |
| Spain | 64 (10·0) | 36 (12·0) | 16 (16·5) | |
| Italy | 35 (5·5) | 23 (7·6) | 1 (1·0) | |
| France | 30 (4·7) | 21 (7·0) | 8 (8·2) | |
| Germany | 25 (3·9) | 9 (3·0) | 5 (5·2) | |
| Others | 30 (4·6) | 8 (2·7) | 9 (9·3) |
Values are given as median [IQR] or count (percent) as appropriate. Health care workers include nurses and physicians who were after infection with SARS-CoV-2 admitted to an ICU as patients. BMI, body mass index; IMC, intermediate care unit; ICU, intensive care unit.