Clinical Study

Diagnostic Value of Exhaled Carbon Monoxide as an Early Marker of Exacerbation in Children with Chronic Lung Diseases

Table 1

Comparison between studied groups regarding exhaled CO level.

Group I
Mean ± SD
Group II
Mean ± SD
Group III
Mean ± SD
𝑃 valueSignificance

Exhaled CO (ppm) 5 . 3 5 ± 1 . 3 5 2 . 6 5 ± 0 . 4 9 1 . 3 0 ± 0 . 4 7 0.00HS

HS: highly significant.