Figure 1. Algorithm for Prediction Model (Text Description) Research in Action, Issue 7 The algorithm for the prediction model for community-acquired pneumonia follows:Patients with community-acquired pneumoniaIs the patient over 50 years of age? No: continue to next step. Yes: Assign patient to risk class II-V based on prediction model scoring system.Does the patient have a history of any of the following comorbid conditions? No: continue to next step. Yes: Assign patient to risk class II-V based on prediction model scoring system.Does the patient have any of the following abnormalities on physical examination? No: Assign patient to risk class I. Yes: Assign patient to risk class II-V based on prediction model scoring system.Return to Document Current as of July 2002 Internet Citation: Figure 1. Algorithm for Prediction Model (Text Description): Research in Action, Issue 7. July 2002. Agency for Healthcare Research and Quality, Rockville, MD. http://www.ahrq.gov/research/findings/factsheets/pneumonia/issue7/figure1txt.html