Table 3. Ordinal logistic regression analysis for length of intensive care unit stay for admissions with vs without diarrhoea.
| Co-variatesa | Odds Ratio (95% Confidence Interval) for Increased Intensive Care Unit Stay | P-value |
|---|---|---|
| Age (per 10 year increase) | 0.99 (0.96–1.01) | 0.20 |
| Surgical: Medical | 1.08 (0.95–1.21) | 0.23 |
| Quintile of APACHE IIb | ||
| 1 | 1.00 | <0.001 |
| 2 | 1.95 (1.74–2.19) | |
| 3 | 2.87 (2.55–3.23) | |
| 4 | 4.30 (3.81–4.86) | |
| 5 | 6.56 (5.74–7.49) | |
| Reason for Intensive Care Unit admission | ||
| Operative intervention | 1.00 | |
| Cardiovascular | 1.81 (1.51–2.17) | <0.001 |
| Respiratory failure | 3.27 (2.83–3.78) | <0.001 |
| Haemorrhage | 1.13 (0.96–1.32) | 0.14 |
| Sepsis | 2.28 (1.92–2.70) | <0.001 |
| Renal failure | 1.93 (1.48–2.52) | <0.001 |
| Neurological | 1.34 (1.11–1.61) | 0.002 |
| Haematological | 1.66 (1.19–2.31) | 0.003 |
| Liver failure | 3.73 (2.50–5.58) | <0.001 |
| Other | 1.66 (1.29–2.14) | <0.001 |
| Diarrhoea vs. Non-Diarrhoea | 9.48 (8.32–10.81) | <0.001 |
aOrdinal logistic regression analysis: dependent variable is length of ICU stay in days.
bAcute Physiology and Chronic Health Evaluation II score.