Table 2.
Independent predictors of delirium in ICU derived from univariate regression analysis performed on the derivation cohort (Count data)
| Risk factor | Delirium group (n = 46) | No delirium group (n = 177) | χ2 | P |
|---|---|---|---|---|
| Male, [n(%)] | 35(76.1) | 110(62.1) | 3.120 | 0.077 |
| History of hypertension, [n (%)] | 24(52.2) | 48(27.1) | 10.484 | 0.001 |
| Pulmonary dysfunction, [n(%)] | 5(10.8) | 18(10.2) | 0.019 | 0.889 |
| Hearing impairment, [n(%)] | 4(8.7) | 17(9.6) | – | 1.000 |
| History of diabetes, [n(%)] | 5(10.9) | 20(11.3) | 4.746 | 0.029 |
| Hypoxaemia,[n(%)] | 28(60.9) | 37(20.9) | 28.238 | 0.000 |
| Hypotension,[n(%)] | 27(58.7) | 65(36.7) | 7.273 | 0.007 |
| Deep sedation,[n(%)] | 33(71.7) | 57(32.2) | 23.709 | 0.000 |
| benzodiazepines, [n(%)] | 30(65.2) | 42(23.7) | 28.746 | 0.000 |
| Metabolic acidosis, [n(%)] | 17(37.0) | 39(22.0) | 4.323 | 0.038 |
| History of peptic ulcer, [n(%)] | 2(4.3) | 1(0.6) | – | 0.109 |
| Sepsis, [n(%)] | 29(63) | 52(29.4) | 17.890 | 0.000 |
| Surgery, [n(%)] | 23(50) | 70(39.5) | 1.641 | 0.200 |
| CPOT≤3 [n(%)] | 40(91.3) | 162(93.8) | 0.893 | 0.345 |
(CPOT:Criticalcare Pain Observation Tool)