Figure 4From: Validation of a portable nitric oxide analyzer for screening in primary ciliary dyskinesias Bland Altman plots comparing the NIOX® Flex with NIOX MINO® at 5 ml/sec. Each point represents the difference between the nNO readings (nL/min) obtained from a patient using the two analysers versus the mean of the two measurements. The reference lines represent the mean (and 1.96*SD) inter-analyser differences.Back to article page