The article by Lee and Harper1 provided useful data on using fever and white blood cell (WBC) count to assess the risk of bacteremia in well-appearing 3- to 36-month-old febrile children. The data were presented as rates of bacteremia at different WBC intervals and as sensitivities, specificities, and positive predictive values for different WBC cutoffs. However, their data would be even more clinically useful if presented as likelihood ratios (LRs).
Shochet S, Newman T. White Blood Cell Count Likelihood Ratios for Bacteremia in Febrile Young Children. Arch Pediatr Adolesc Med. 2000;154(9):963–964. doi:10.1001/archpedi.154.9.963