TABLE 1.
Patient Demographics and Clinical Characteristics Across Multiparameter Intelligent Monitoring of Intensive Care and University of California, San Francisco Cohorts
| Primary Dataset: MIMIC-III (n = 9,104) | External Dataset: UCSF (n = 1,123) | |||||
|---|---|---|---|---|---|---|
| Characteristics | Total | ICU Survivor | ICU Nonsurvivor (or Discharge to Hospice) | Total | ICU Survivor | ICU Nonsurvivor (or Discharge to Hospice) |
| n = 9,104 | n = 8,073 (88.7%) | n = 1031 (11.3%) | n = 1,123 | n = 793 (70.6%) | n = 330 (29.4%) | |
| Age (mean [sd]) | 62.7 (16.6) | 62.0 (16.7) | 68.9 (14.2) | 74.6 (7.9) | 73.7 (7.3) | 76.8 (8.7) |
| Self-identified gender | ||||||
| Male | 5,106 (56.1) | 4,565 (56.5) | 541 (52.5) | 618 (55.0) | 428 (54.0) | 190 (57.6) |
| Female | 3,998 (43.9) | 3,508 (43.5) | 490 (47.5) | 505 (45.0) | 365 (46.0) | 140 (42.4) |
| Primary language categorya (%) | ||||||
| East or Southeast Asian | 131 (1.4) | 103 (1.3) | 28 (2.7) | 142 (12.6) | 89 (11.2) | 53 (16.1) |
| Continental European | 272 (3.0) | 237 (2.9) | 35 (3.4) | 29 (2.6) | 13 (1.6) | 16 (4.8) |
| Other/unknown | 303 (3.3) | 254 (3.1) | 49 (4.8) | 11 (1.0) | 6 (0.8) | 5 (1.5) |
| Spanish | 193 (2.1) | 179 (2.2) | 14 (1.4) | 43 (3.8) | 29 (3.7) | 14 (4.2) |
| English | 8,205 (90.1) | 7,300 (90.4) | 905 (87.8) | 898 (80.0) | 656 (82.7) | 242 (73.3) |
| Self-identified race and ethnicitya (%) | ||||||
| Asian | 219 (2.4) | 188 (2.3) | 31 (3.0) | 218 (19.4) | 147 (18.5) | 71 (21.5) |
| Black | 948 (10.4) | 852 (10.6) | 96 (9.3) | 87 (7.7) | 63 (7.9) | 24 (7.3) |
| Hispanic/Latino | 346 (3.8) | 320 (4.0) | 26 (2.5) | 149 (13.3) | 107 (13.5) | 42 (12.7) |
| Multi/other | 60 (0.6) | 55 (0.7) | 5 (0.5) | 185 (16.5) | 132 (16.6) | 53 (16.1) |
| Unknown/declined | 575 (6.3) | 483 (6.0) | 92 (8.9) | N/A | N/A | N/A |
| White | 6,956 (76.4) | 6,175 (76.5) | 781 (75.8) | 633 (56.4) | 451 (56.9) | 182 (55.2) |
| Clinical characteristics | ||||||
| Mechanical ventilation (%) | 4,231 (46.5) | 3,505 (43.4) | 726 (70.4) | 155 (13.8) | 95 (12.0) | 60 (18.2) |
| Hemodialysis initiation (%) | 2,098 (23.0) | 1,737 (21.5) | 361 (35.0) | 109 (9.7) | 40 (5.0) | 69 (20.9) |
| Tracheostomy placement (%) | 625 (6.9) | 508 (6.3) | 117 (1.3) | 12 (1.1) | 7 (0.9) | 5 (1.5) |
| Length of stay in days (mean [sd]) | 9.3 (10.3) | 9.1 (9.5) | 10.7 (15.2) | 3.5 (5.2) | 4.7 (12.9) | 3.9 (8.3) |
| Number of elixhauser comorbidities (MIMIC) (mean, sd) or van Walraven score (UCSF) (mean, sd) | 2.88 (1.43) | 2.85 (1.42) | 3.11 (1.48) | 13.7 (10.8) | 11.1 (9.71) | 20.0 (10.7) |
MIMIC-III = Multiparameter Intelligent Monitoring of Intensive Care III, N/A = not applicable, UCSF = University of California, San Francisco.
a
For the purposes of confidentiality, any group with fewer than 10 patients were merged into “Other.”
Patients were categorized by those who survived their ICU stay and those who died in the ICU (or were discharged to hospice). p values are not included given these covariates are not the primary predictors of interest in this study.