Characteristics of total ICU cohort (N=77 927) and study cohort (N=1985)
| Total ICU cohort | Study cohort | |
|---|---|---|
| N | 79 927 | 1985 |
| Age-mean(SD) | 61.8 (18.3) | 63.2 (16.2) |
| Sex number (%) | ||
| Female | 33 556 (42) | 1083 (55) |
| Male | 46 371 (58) | 902 (45) |
| Race number (%) | ||
| White | 63 712 (80) | 1602 (81) |
| Non-white | 16 215 (20) | 383 (19) |
| Patient type number (%) | ||
| Medical | 39 355 (49) | 1372 (69) |
| Surgical | 40 572 (51) | 613 (31) |
| Deyo-charlson index number (%) | ||
| 0–3 | 56 312 (70) | 1227 (62) |
| 4–6 | 19 060 (24) | 553 (28) |
| >6 | 4555 (6) | 205 (10) |
| Body mass index-mean(SD)* | 27.3 (6.9) | 27.3 (7.7) |
| Area deprivation index-mean(SD)† | 86.0 (32.8) | 81.8 (30.4) |
| Sepsis number (%) | 10 215 (13) | 231 (12) |
| Acute respiratory failure number (%) | 12 308 (15) | 351 (18) |
| 90-day mortality number (%) | 13 860 (17) | 311 (16) |
Greater Area Deprivation Index means a greater disadvantage.
*5527 of the total ICU cohort and 435 study cohort patients had body mass index determined.
†Area Deprivation Index is an ecological measure of socioeconomic disadvantage.
ICU, intensive care unit.