Table 1.
General characteristics for patients included.
| ICU patients | |
|---|---|
| Count | 34 200 |
| Age categories | |
| 18–45 | 2076 (6.1) |
| 46–60 | 6820 (19.9) |
| 61–70 | 11,500 (33.6) |
| 71–80 | 11,290 (33.0) |
| 80– | 2514 (7.4) |
| Male, count (%) | 24 800 (72.5) |
| Income categories, count (%) | |
| Low | 3423 (10.0) |
| Medium | 27 837 (81.7) |
| High | 2819 (8.3) |
| Education level, count (%) | |
| Low | 10 803 (32.1) |
| Medium | 15 580 (43.3) |
| High | 8303 (24.6) |
| CCI categories, count (%) | |
| CCI 0 | 9748 (28.5) |
| CCI 1 | 10 799 (31.6) |
| CCI > 1 | 13 653 (39.9) |
| Psychiatric comorbidity, count (%) | 2044 (6.0) |
| Substance abuse, count (%) | 729 (2.1) |
| Opioid use 6 months pre-ICU | 4810 (14.1) |
| Acute myocardial infarction | 10 169 (29.7) |
| Congestive heart failure | 6567 (19.2) |
| Peripheral vascular disease | 5157 (15.1) |
| Cerebrovascular disease | 2946 (8.6) |
| Dementia | 70 (0.2) |
| COPD | 3739 (10.9) |
| Rheumatoid disease | 1190 (3.5) |
| Peptic ulcer disease | 604 (1.8) |
| Mild liver disease | 482 (1.4) |
| Moderate/severe liver disease | 107 (0.3) |
| Diabetes w/o complications | 7186 (21.0) |
| Diabetes with complications | 2036 (6.0) |
| Hemiplegia or paraplegia | 235 (0.7) |
| Renal disease | 1465 (4.3) |
| Cancer | 3235 (9.5) |
| Metastatic cancer | 310 (0.9) |
| AIDS | 38 (0.1) |
| ICU length of stay, days | |
| 0–2 | 24 937 (72.9) |
| 3–7 | 7460 (21.8) |
| > 7 | 1803 (5.3) |
| Surgery | |
| Acute care | 2201 (6.4) |
| Elective | 30 179 (88.2) |
| No surgery | 1820 (5.3) |
| ICU admission year | |
| 2010–2011 | 7706 (22.5) |
| 2012–2013 | 7433 (21.7) |
| 2014–2015 | 7154 (20.9) |
| 2016–2018 | 11 907 (34.8) |
Categorical parameters are presented as n (%), continuous parameters as median with interquartile range (IQR), CCI Charlson Comorbidity Index, COPD chronic obstructive pulmonary disease, AIDS acquired immune deficiency syndrome, ICU intensive care unit.