Evaluation of serum levels of interferon beta and nucleotide binding and oligomerization domain 2 gene polymorphism in children with cough asthma phenotype: a case–control study

Egyptian Pediatric Association Gazette

Table 3 Correlation analysis between laboratory biomarkers in studied cases (allergic march, cough phenotypes)

Groups		Serum eosinophilic percentage		Serum IgE		Serum IFN-B
Groups		r	p	r	p	r	p
Allergic march	Serum eosinophil percentage	–	–	−0.084	0.522	0.271	0.036*
	Serum IgE	−0.084	0.522	–	–	0.266	0.04*
	Serum IFN-B	0.271	0.036*	0.266	0.04*	–	–
Cough phenotype	Serum eosinophil percentage	–	–	−0.039	0.831	0.048	0.712
	Serum IgE	−0.039	0.831	–	–	−0.313	0.076
	Serum IFN-B	0.048	0.712	-0.313	0.076	–	–
Control	Serum eosinophil percentage	–	–	0.640	0.006*	0.111	0.502
	Serum IgE	0.640	0.006*	–	–	0.264	0.307
	Serum IFN-B	0.111	0.502	0.264	0.307	–	–