Fig. 1From: Development and validation of a simple tool composed of items on dyspnea, respiration rates, and C-reactive protein for pneumonia prediction among acute febrile respiratory illness patients in primary care settingsThe diagram for the flow of participants through the study. A The development data were collected in Shanghai fever clinics between January 22 and February 6, 2020. B The validation data were collected in primary care settings from 5 different provinces in China between March 1, 2020, to December 31, 2021. AFRI, acute febrile respiratory illness; CT, computerized tomographyBack to article page