2.5 Assessment of real-time MBW quality control in secondary centre in Zurich
To validate our findings, we implemented real-time MBW quality control in a centre (Zurich, Switzerland) with less experience in MBW methodology. We first assessed MBW measurements from a random subset of 34 clinical visits from pediatric patients with CF attending their routine care in Zurich, Switzerland. The MBW operators were then instructed on how to use the quality control matrix and given access to the supplementary teaching material (see online supplemental). Mandatory real-time MBW quality control and reporting of test acceptability was implemented for all measurements. We then retrospectively assessed test acceptability and agreement between the operator and reviewer in a random subset of 30 MBW measurements.