Skip to main content

Table 4 Multivariate analysis of factors associated with ESBL acquisition

From: Epidemiology of extended-spectrum beta-lactamase-producing Enterobacteriaceae in an intensive care unit with no single rooms

Variable Reference Odds ratio 95% Confidence interval
ICU length of stay (days)
 <4 3 0.92 0.82, 1.04
 4–7 6 1.00 1.00, 1.00
 7–10 9 1.08 0.96, 1.22
 >10 15 1.28 0.89, 1.83
SAPS II
 <32 25 1.00 1.00, 1.00
 33–45 40 1.89 1.11, 3.24
 45–60 53 3.44 1.22, 9.68
 >60 73 7.40 1.38, 39.59
  1. Multivariate logistic regression including 218 complete observations
  2. Hosmer–Lemeshow p value 0.6
  3. SAPS II and ICU length of stay were included as continuous variables
  4. SAPS II was not transformed
  5. ICU length of stay was included using the following equation x 2 − 1.96 where x = (los)/10
  6. Covariates were included as continuous variables in the multivariable model
  7. Presented odds ratios were calculated for the reference indicated in the table