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Table 4 Comparing P value of associated clinical, laboratory, and radiographic findings among positive versus negative pertussis and mycoplasma cases

From: The use of multiplex PCR for the detection of atypical pathogens in Egyptian children with CAP: a high rate of Bordetella pertussis in early infancy

Variables

Pertussis-positive versus pertussis-negative cases

Mycoplasma-positive versus mycoplasma-negative cases

Prolonged cough > 14 days

≤ 0.001*

> 0.999

Upper respiratory symptoms

0.001*

0.13

Chest indrawing

0.04*

> 0.999

Rhonchi

0.04*

> 0.999

Grunting

0.36

> 0.999

Cyanosis

0.6

> 0.999

Refusal of feeding

0.11

0.57

Vomiting

0.001*

0.57

Lethargy

0.61

> 0.999

Convulsion

1.0

> 0.999

Severe pneumonia

0.1

0.5

ICU admission

0.6

> 0.999

Incomplete vaccination

0.007*

0.12

Radiological findings

 Unilateral affection

0.7

0.03*

 Bilateral affection

  

Number of involved lobes

 1 lobe

0.08

0.29

 2 lobes or more

  

Alveolar consolidation

1.0

> 0.999

Interstitial infiltration

0.001*

0.01*

Total leukocytic count

 Leukocytosis > 15,000

0.07

0.58

 Lymphocytosis

0.05

0.5

  1. *P values < 0.05 is statistically significant