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Table 5 Multivariate analysis of risk factors of complicated EV71 disease (grade 2 to 4)

From: The correlation between the presence of viremia and clinical severity in patients with enterovirus 71 infection: a multi-center cohort study

  Odds ratio 95% CIs pvalue
Age <1 year 2.57 0.87 - 7.62 0.09
Sex (Male) 0.99 0.86 - 1.15s 0.92
Skin rash 0.29 0.05 - 1.54 0.15
Fever a 5.63 1.74 - 18.28 0.001
Oral ulcer 1.91 0.31 - 11.74 0.48
Day of illness on sampling (day) 1.05b 0.84 - 1.31 0.66
Viremia 1.26 0.61 - 2.59 0.54
  1. aFever was defined as any body temperature over 38 degrees Celsius.
  2. bThe value represents the change in odds ratio per day after disease onset.