Figure 2.

Area under the curve (AUC) (C statistic) for each of the four additive clinical scenarios used to classify radiographically confirmed clinical pneumonia, stratified by age group. We plotted AUCs and corresponding 95% CIs derived from multivariable logistic regression models for each additive clinical scenario (described in y axis), for all children in the sample (first panel) and stratified by age group: 2 to 11 mo of age (middle panel) and 12 to 59 mo of age (bottom panel). We also present numerical AUCs and 95% CIs for each row. LUS = lung ultrasound; Spo₂ = oxyhemoglobin saturation; WHO = World Health Organization.