Table 5.
Risk factors for death from Escherichia coli bacteraemia identified by multivariate logistic regression analysis according to age group
| Risk factors (present versus absent) | Value for groups | Multivariate analysis | ||
|---|---|---|---|---|
| Survivors | Non survivors | OR* (95% CI) | P value | |
| Young patients (18–64 yr) | (n = 354) | (n = 41) | ||
| Cirrhosis | 18 (5·4) | 11 (27·5) | 10 (3·8–27) | <0·001 |
| Immunocompromised | 144 (40·7) | 27 (65·9) | 2·7 (1·2–6·2) | 0·016 |
| Urinary tract portal of entry | 211 (59·6) | 11 (26·8) | 0·37 (0·16–0·82) | 0·015 |
| Polymicrobial bacteraemia | 12 (3·4) | 10 (24·4) | 6·3 (2·4–18) | <0·001 |
| Cefotaxime resistance | 8 (2·3) | 5 (12·2) | 4·0 (1·0–16) | 0·036 |
| Old patients (65–79 yr) | (n = 311) | (n = 61) | ||
| Cirrhosis | 13 (4·4) | 7 (11·7) | 3·4 (1·2–9·4) | 0·017 |
| Immunocompromised | 120 (38·6) | 38 (62·3) | 2·4 (1·3–4·5) | 0·004 |
| Healthcare-associated infection | 103 (33·1) | 38 (62·3) | 2·6 (1·4–4·8) | 0·003 |
| ireA | 90 (29·0) | 6 (9·8) | 0·27 (0·11–0·67) | 0·005 |
| Very old patients (⩾80 yr) | (n = 250) | (n = 34) | ||
| Renal insufficiency | 36 (14·5) | 12 (35·3) | 3·3 (1·5–7·4) | 0·003 |
| hra | 169 (67·6) | 16 (47·1) | 0·42 (0·20–0·87) | 0·020 |
OR, Odd ratio; CI, confidence interval.
*
Adjusted odds ratios taking into account the remaining risk factors of the model.