Table 1.

Results of Univariate Analyses in the Derivation Sample*

FactorMedian Value in
Patients With
Bacteremia
(95% CI; n = 46)
Median Value in
Patients Without
Bacteremia
(95% CI;n = 587)
P Value
WBC (×1000 cells/mm3)18.2 (15.7,20.1)10.6 (10.0,11.0)<.0001
PMN (%)66.5 (58.1,71.0)52.0 (50.0,54.0)<.0001
Granulocytes (%)84.0 (82.0,86.0)70.6 (64.3,75.8).07
Band count (%)5.0 (4.0,6.0)2.0 (2.0,3.0).001
ANC (×1000 cells/mm3)13.0 (10.5,14.2)6.0 (5.5,6.4)<.0001
Weight (kg)10.0 (9.3,10.5)10.0 (9.7,10.3).87
Age (mo)16.1 (12.9,18.3)14.4 (13.5,15.9).47
Gender (% female).42 (.38,.46).65 (.51,.80).002
  • * The factors identified as significant predictors of bacteremia in univariate analyses are displayed along with comparisons of the median values for these factors in patients with and without bacteremia.

  • P values for continuous variables obtained using the 2-sample Wilcoxon rank-sum test. P values for gender obtained by χ2 testing.