Table 2.
Mortality among the medical and surgical intensive care unit (ICU) patient population by admission characteristics
| Variable | All Patients n (%) | P§ | Surgical Patients n (%) | P§ | Medical Patients n (%) | P§ |
|---|---|---|---|---|---|---|
| A. 30-day mortality | ||||||
| 24-hr indirect admission | 63/474 (13) | 0.0366 | 9 (4.9) vs. 70 (2.9) | 0.17 | 54 (24) vs. 270 (27) | 0.41 |
| Code blue event | 41/65 (63) | <0.0001 | 6 (55) vs. 73 (3.2) | <0.01 | 35 (69) vs. 289 (23) | <0.01 |
| Rapid response call | 73/280 (26) | <0.0001 | 8 (12) vs. 71 (2.8) | <0.01 | 65 (38) vs. 259 (24) | 0.04 |
| Weekend admissions | 64/440 (15) | 0.0037 | 12 (5.3) vs. 67 (2.9) | 0.13 | 52 (32) vs. 272 (25) | 0.86 |
| Evening admissions | 103/630 (16) | <0.0001 | 21 (6.9) vs. 58 (2.6) | <0.01 | 82 (30) vs. 242 (25) | 1.0 |
| Severe sepsis/ shock | 102/831 (12) | 0.054 | 19 (3.9) vs. 60 (2.9) | 0.24 | 83 (28) vs. 241 (25) | 0.61 |
| ICU Readmission | 109/704 (15) | <0.0001 | 30 (7.3) vs. 49 (2.3) | <0.01 | 79 (32) vs. 245 (24) | 0.36 |
| B. 90-day mortality | ||||||
| 24-hr indirect admission | 88/474 (19) | 0.0037 | 19 (11) vs. 122 (5.1) | 0.006 | 69 (24) vs. 232 (33) | 0.003 |
| Code blue event | 43/65 (66) | <0.0001 | 6 (55) vs. 135 (5.3) | <0.0001 | 37 (69) vs. 364 (29) | <0.0001 |
| Rapid response call | 92/280 (33) | <0.0001 | 11 (16) vs. 130 (5.2) | 0.001 | 81(38) vs. 320 (29) | 0.012 |
| Weekend admissions | 84/440 (19) | 0.0017 | 16 (7.1) vs. 125 (5.4) | 0.282 | 68 (31) vs. 333 (31) | 0.012 |
| Evening admissions | 125/630 (20) | <0.0001 | 25 (8.3) vs. 116 (5.1) | 0.03 | 100(30) vs. 301 (31) | 0.89 |
| Severe sepsis/ shock | 133/831 (16) | 0.071 | 35 (7.3) vs. 106 (5.1) | 0.075 | 98 (28) vs. 303 (32) | 0.198 |
| ICU Readmission | 142/704 (20) | <0.0001 | 47 (11) vs. 94 (4.4) | <0.0001 | 95 (32) vs. 306 (30) | 0.51 |
Association between clinical factors and 30-day (A), and 90-day mortality (B). Variables are listed along with their presence in the population. Numerators indicate the number dying at the specified time (30d, 90d), and denominators indicate the total number identified with the variable (sepsis, for example). Separate analyses for medical and surgical sub-populations are also presented.
§
P values indicate significant increases in mortality for patients in each category using Fisher’s exact test.
Analysis of 1-year mortality is in the supplemental data file (available online).