Figure 1.

Oxyhemoglobin saturation (Spo₂) among children by acute respiratory illness status. Boxplots, from left to right, represent Spo₂ values for children without an acute respiratory illness, with an acute respiratory illness that was not pneumonia (asthma, bronchiolitis, or upper respiratory infections), with clinical pneumonia, and with severe clinical pneumonia. The gray dots represent outliers (ie, values that lie > 1½ times the interquartile range). Diamonds/circles and vertical bars to the left of each boxplot represent the mean Spo₂ and corresponding 95% CI, respectively, stratified by chest radiography (CXR) findings (diamonds show CXR without a consolidation, circles show CXR with a consolidation).