Table 4 Multivariate analysis of the different laboratory parameters for the diagnosis of serious bacterial infection in children with fever ⩽12 h of duration
Trend estimateSEt-ratiop ValueOR (95% CI)
Constant−3.410.49−6.92<0.001
WCC (103/μl)0.080.032.330.021.1 (1.01 to 1.15)
CRP (⩾30 mg/l)1.720.434.01<0.0015.6 (2.4 to 12.9)
PCT-Q (⩾0.5 ng/ml)2.060.405.11<0.0017.9 (3.6 to 17.4)
  • CRP, C reactive protein; OR, odds ratio; PCT-Q, semiquantitative procalcitonin; SE, standard error; WCC, leucocyte count.