Table 6. Predictive values of risk factors with calculated hazard ratios (HR) for longer latency time (LAT).
| B | HR to predict LAT | p-value | |
|---|---|---|---|
| Gender (male) | -0.3774 | 0.6856 | 0.4888 |
| Age | 0.0172 | 1.0173 | 0.4834 |
| Time in ICU | 0.0053 | 1.0053 | 0.7228 |
| APACHE II | -0.2074 | 0.8127 | 0.1884 |
| Intubation/tracheotomy | 0.4217 | 1.5245 | 0.4217 |
| Prophylaxis against stress ulcer | 0.8792 | ||
| S | -0.1108 | 0.8951 | 0.8220 |
| R | -0.3446 | 0.7085 | 0.6123 |
| Consciousness | -0.3890 | 0.6777 | 0.5891 |
| Sedation | -2.1751 | 0.1136 | 0.0533 |
| pH value | 0.9685 | 2.6341 | 0.0111 |
| MV (days) | 0.7368 | 2.0893 | 0.3144 |
| Previous antibiotics | -3.2369 | 0.0393 | 0.0222 |
B = correlation coefficient; ICU = intensive care unit; MV = mechanical ventilation; S = sucralfate; R = ranitidine; APACHE = Acute Physiology and Chronic Health Evaluation