Table 3.
Risk factors for death from E. coli bacteremia according to the portal of entry
| Portal of entry and variablec | Value for groupd |
Multivariate analysis OR (95% CI) | P value | |
|---|---|---|---|---|
| Nonsurvivors | Survivors | |||
| Urinary tract (n = 581) | (n = 44) | (n = 537) | ||
| Median age (yr) (range) | 76 (43–99) | 70 (18–101) | 1.48 (1.16–1.89)a | 0.0019 |
| No. (%) of patients | ||||
| Tobacco addiction | 14 (33.33) | 86 (16.48) | 2.4 (1.11–5.01) | 0.0251 |
| Cirrhosis | 7 (16.67) | 17 (3.26) | 7.0 (2.48–19.85) | 0.0002 |
| Not I, not H, before Bb | 14 (32.56) | 342 (64.04) | 1 | – |
| H before B +/− I | 16 (37.21) | 91 (17.04) | 4.34 (1.92–9.82) | 0.0004 |
| I, not H, before B | 13 (30.23) | 101 (18.91) | 3.87 (1.69–8.87) | 0.0014 |
| Digestive tract (n = 129) [no. (%) of patients] | (n = 19) | (n = 110) | ||
| Cirrhosis | 4 (22.22) | 9 (8.57) | 4.20 (1.07–16.41) | 0.0392 |
| Polymicrobial | 5 (26.32) | 11 (10.00) | 4.29 (1.22–15.15) | 0.0235 |
a
Age by 10 years.
b
The 3 classes formed as a result of the significant interaction between the 2 risk factors of hospitalization before bacteremia and immunocompromise.
c
H, hospitalized; B, bacteremia; I, immunocompromised; +/−, with or without.
d
For a urinary tract portal of entry, there were 44 nonsurvivors and 537 survivors. For a digestive tract portal of entry, there were 19 nonsurvivors and 110 survivors.