Abstract
This study aimed to cluster patients with pneumonia according to their rehabilitation outcomes [activities of daily living (ADL) and physical function assessment] and to examine patient backgrounds and course of treatments. The subjects included 158 patients (median age:85 years) admitted to an acute care hospital for pneumonia. Hierarchical cluster analysis was conducted to compare the before and after initial assessments and pre-discharge assessment. The results showed that patients with moderate to high ADL ability and physical function exhibited great improvements in rehabilitation outcomes, while some patients showed a decline in physical function. Patients with pneumonia whose ADL ability and physical function were low included a mixture of patients with terminal-stage disease and those whose rehabilitation outcomes were expected to improve.