Patient Demographic and Clinical Characteristics by WHO CXR Category.

<p>* Fisher’s exact test, except for median age which was performed using Mann-Whitney U test.</p><p>** Chronic conditions include asthma, diabetes, cancer, heart disease, chronic lung disease, chronic liver disease, and HIV/AIDS.</p><p>*** Oxygen saturation <90% or <88% in Quezaltenango.</p><p>Patient Demographic and Clinical Characteristics by WHO CXR Category.