Cluster Analysis of Vulnerable Groups in Acute TBI Rehabilitation

Publication date: Available online 6 January 2018
Source:Archives of Physical Medicine and Rehabilitation
Author(s): Erkut N. Kucukboyaci, Coralynn Long, Michelle Smith, Joseph F. Rath, Tamara Bushnik
ObjectiveTo analyze the complex relationship between various social indicators that contribute to socioeconomic status and healthcare barriers.DesignCluster analysis of historical patient data obtained from inpatient visits.SettingSetting: Inpatient rehabilitation unit in a large, urban university hospitalParticipantsAdult patients receiving acute inpatient care, predominantly for closed head injury.InterventionsNot applicableMain outcome measuresWe examined the membership of TBI patients in various "vulnerable group" (VG) clusters (e.g., homeless, unemployed, racial/ethnic minority) and characterized the rehabilitation outcomes of the patients (e.g., duration of stay, changes in Functional Independence Measure [FIM] scores between admission to inpatient stay and discharge).ResultsAnalysis revealed four major clusters (i.e., Clusters A-D) separated by VG memberships, with distinct durations of stay and FIM gains during their stay. Cluster B, the largest cluster and also consisting of mostly racial/ethnic minorities, had the shortest duration of hospital stay and one of the lowest FIM improvements among the four clusters despite higher FIM scores at admission. In cluster C, also consisting of mostly ethnic minorities with multiple SES vulnerabilities, patients were characterized by low cognitive FIM scores at admission and the longest duration of stay, and they showed good improvement in FIM scores.ConclusionsApplication of clustering techniques to inpatient data identified distinct clusters of patients who may experience differences in their rehabilitation outcome due to their membership in various "at-risk" groups. Results identified patients (i.e., cluster B, with minority patients and Cluster D, with elderly patients) who attain below-average gains in brain injury rehabilitation. Results also suggested that systemic (e.g., duration of stay) or clinical service improvements (e.g., staff's language skills, ability to offer substance abuse therapy, provide appropriate referrals or liaise with intensive social work services or plan subacute rehabilitation phase) could be beneficial for acute settings. Stronger recruitment, training and retention initiatives for bilingual and multiethnic professionals may also be considered to optimize gains from acute inpatient rehabilitation following traumatic brain injury.



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