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Classification of patients according to leakage reported by machines; median leak value was determined for each brand. (a) Distribution of leak magnitudes in the ResMed devices expressed as unintentional leakage (L/min) (x-axis). (b) Distribution of leak magnitudes in the Philips devices expressed as unintentional leakage (L/min) (x-axis). (c) Distribution of leak magnitudes in the WEINMANN devices expressed as unintentional leakage (L/min) (x-axis).
