Table 2.
Subgroup analyses on all-cause mortality
| Subgroup | No. of studies | No. of patients | OR (95% CI) | I2 | P value | |
|---|---|---|---|---|---|---|
| Admission category | ||||||
| Medical ICU | 16 | 2295 | 0.75 (0.59-0.95) | 6% | 0.02 | |
| Surgical ICU | 18 | 5605 | 0.83 (0.70-0.99) | 1% | 0.04 | |
| Mixed ICU | 23 | 13940 | 0.97 (0.84-1.11) | 42% | 0.65 | |
| Sepsis and septic shock | ||||||
| Septic patients | 13 | 3107 | 0.96 (0.73-1.25) | 40% | 0.74 | |
| Non-septic patients | 47 | 18753 | 0.89 (0.79-1.01) | 33% | 0.07 | |
| Neurocritical illness | ||||||
| Neurocritical care patients | 19 | 2800 | 0.91 (0.75-1.10) | 0% | 0.32 | |
| Non-neurocritical care patients | 42 | 19050 | 0.88 (0.77-1.01) | 45% | 0.08 | |
| Diabetes mellitus | ||||||
| Diabetic patients | 8 | 2217 | 1.12 (0.91-1.37) | 0% | 0.28 | |
| Non-diabetic patients | 54 | 19621 | 0.89 (0.79-1.00) | 32% | 0.05 | |
Abbreviations: ICU, intensive care unit; OR, odds ratio; CI, confidence interval.