Table 1.
Univariate analysis of risk factors
| Variable | Chi-squared | P-value |
|---|---|---|
| Sex | 2.40 | 0.1213 |
| Circulatory disease | 39.87 | < 0.0001 |
| Respiratory disease | 18.38 | < 0.0001 |
| Digestive disease | 3.19 | 0.0740 |
| Renal failure | 29.78 | < 0.0001* |
| Genito-urinary disease | 0.88 | 0.3471 |
| Previous infection | 13.85 | 0.0013* |
| CNS disease | 16.13 | 0.0024* |
| Pancreatic cancer | 8.26 | 0.022* |
| Oesophageal cancer | 255.28 | <0.001* |
| Malignant neoplasm | 177.63 | <0.001 |
| Diabetes mellitus | 5.82 | 0.0279* |
| ITU/HDU | 492.03 | < 0.0001 |
| Deprivation score | 4.81 | 0.5683 |
*
Using Fisher's exact test due to small expected counts.