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Table 3 Univariate logistic regression analysis of severe pertussis associated with death

From: Risk factors associated with death in infants <120 days old with severe pertussis: a case-control study

characteristic

P Value

unadjusted OR(95%CI)

apnoea

0.001

8.571 (2.082–35.294)

length of PICU stay (IQR)

0.003

 

Leukocytosis (WBC ≥ 30 × 109 /L.)

0.001

18.421 (2.223–152.647)

Leukocytosis (WBC ≥ 50 × 109 /L.)

0

34.357 (6.316–186.900)

Highest WBC count

0

 

Highest lymphocyte count

0

 

Pulmonary hypertension

0.001

14.667 (3.001–71.678)

  1. Abbreviations: IQR interquartile range, OR odds ratio;CI, confidence interval
  2. Leukocytosis was defined as WBC count ≥30 × 109 /L