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. 2013 Mar 22;8(3):e59209. doi: 10.1371/journal.pone.0059209

Table 3. Multivariable logistic regression model analyzing risk factors for hemolytic uremic syndrome and risk score to predict development of HUS in patients with proven STEC infection (add points to get total risk score).

OR 95% CI P Risk scorepoints
Vomiting 3.48 1.88 6.53 <0.001 1.2
Age ≥75 years* 3.27 1.12 9.70 0.030 1.2
Visible blood in stools 3.91 1.20 16.01 0.036 1.4
Leukocytes (per 1000cells/mm3 higher) 1.12 1.10 1.31 <0.001 0.2
*

vs. <75 years.