Practice Variation in Spontaneous Breathing Trial Performance and Reporting

Figure 2

Distribution of fraction of inspired oxygen (FiO₂) ranges overall and across sites. The large pie graph in this figure depicts the overall distribution in FiO₂ values from all spontaneous breathing trials (SBTs) with available data for oxygenation. The series of small pie graphs represent the centre-specific distributions, allowing comparison across sites. Values are expressed as % proportion of SBTs. values represent the number of SBTs at each site with available data.