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Table 3 Risk ratio of hospitalization and appendectomy by symptom of Y. enterocolitica infection in yersiniosis patients, Germany 2009–2010 (N=571)

From: Clinical aspects and self-reported symptoms of sequelae of Yersinia enterocolitica infections in a population-based study, Germany 2009–2010

  Hospitalization Appendectomy
Symptom Risk ratioa(95% CIb) P valuec Risk ratioa(95% CI) P valuec
Diarrhea 0.5 (0.4 -0.7) <0.001 0.3 (0.1-0.6) 0.001
Abdominal pain 0.9 (0.6 -1.2) 0.406 0.4 (0.2 -1.0) 0.049
Pain in lower right abdomen 2.7 (1.9-3.8) <0.001 19.0 (2.6-140.7) 0.004
Tenesma 0.9 (0.6-1.2) 0.428 0.6 (0.2-2.1) 0.451
Fever 2.0 (1.5-2.8) <0.001 2.3 (0.9 -5.6) 0.075
Vomiting 1.7 (1.3 -2.1 ) <0.001 1.0 (0.3-2.8) 0.929
Visible blood in stool 0.9 (0.5 -1.9) 0.871 .d 0.626
Other symptoms 1.2 (0.9-1.7) 0.154 0.6 (0.3 -1.4) 0.277
  1. aadjusted for age group and sex in a log-binomial regression model.
  2. bConfidence interval.
  3. cWald test.
  4. dNo RR estimate was calculated because none of the 22 patients with appendectomy had reported visible blood in stool.