|
Odds ratio estimates from the best logistic regression model as selected by the Akaike Information Criterion (n = 1212) |
|||||
| Variable |
Deaths |
n (%) |
Odds ratio (95% CI) |
P |
|
|
|
|||||
| Type of condition |
|||||
| Haemorrhage |
6 |
581 (1.0) |
1.00 |
0.167 |
|
| Hypertensive |
16 |
631 (2.5) |
2.30 (0.71–7.49) |
||
| Surgical status |
|||||
| Surgical (admission from theatre) |
6 |
662 (0.9) |
1.00 |
0.093 |
|
| Nonsurgical |
16 |
550 (2.9) |
2.53 (0.86–7.44) |
||
| Past medical history present*a |
|||||
| No |
20 |
1200 (1.7) |
1.00 |
0.010 |
|
| Yes |
2 |
12 (16.7) |
14.91 (1.88–118.13) |
||
| SBP (mmHg)* |
|||||
| Below normal (<100) |
129 |
338 (3.6) |
1.38 (1.06–1.81) per 10 mmHg deviation from normal |
0.017 |
|
| Normal range (100–170) |
1 |
467 (0.2) |
|||
| Above normal (>170) |
9 |
407 (2.2) |
|||
| Heart rate (beats/min)* |
|||||
| Below normal (<60) |
1 |
86 (1.2) |
1.36 (1.08–1.71) per 10 beats/min deviation from normal |
0.009 |
|
| Normal range (60–100) |
1 |
248 (0.4) |
|||
| Above normal (>100) |
20 |
878 (2.3) |
|||
| PaO2/FiO2 ratio (mmHg) |
|||||
| <280 |
14 |
409 (3.4) |
1.49 (0.98–2.27) per 100 mmHg decrease |
0.063 |
|
| 280–330 |
4 |
413 (1.0) |
|||
| >330 |
4 |
390 (1.0) |
|||
| Potassium (mmol/l) |
|||||
| Below normal (<3) |
2 |
29 (6.9) |
0.18 (0.01 – 2.46) per 1 mmol/l deviation from normal |
0.198 |
|
| Normal range (3–5.5) |
18 |
1069 (1.7) |
|||
| Above normal (>5.5) |
2 |
114 (1.8) |
|||
| Lowest WBC (× 109/l) |
|||||
| <10 |
8 |
409 (2.0) |
1.67 (0.96–2.92) per 5 × 109/l decrease |
0.070 |
|
| 10–13 |
7 |
357 (2.0) |
|||
| >13 |
7 |
446 (1.6) |
|||
| GCS* |
|||||
| 3–10 |
10 |
86 |
(11.6) |
1.27 (1.16–1.39) per 1 point decrease |
<0.001 |
| 11–14 |
2 |
94 |
(2.1) |
||
| 15 |
10 |
1032 |
(1.0) |
||
|
aEvidence of any of a prespecified list of severe conditions in the past medical history, as defined in Acute Physiology and Chronic Health Evaluation (APACHE) II. CI, confidence interval; GCS, Glasgow Coma Scale; PaO2/FiO2, arterial oxygen tension; fractional inspired oxygen; SBP, systolic blood pressure; WBC, white blood count. *P < 0.05. | |||||
Harrison et al. Critical Care 2005 9(Suppl 3):S25 doi:10.1186/cc3542 |
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