Fig. 4From: The impact of nasal aspiration with an automatic device on upper and lower respiratory symptoms in wheezing children: a pilot case-control studyDifference in episode’s duration of a upper and b lower respiratory symptoms between patients using a DuoBaby nebulizer equipped (cases, n = 43) or not equipped (controls; n = 46) with an nasal aspirator. *P-value from mixed-effects Poisson regressionBack to article page