Healthcare utilization and cost of care for a multidisciplinary integrated practice unit model of spine rehabilitation compared to standard or no physical therapy
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Objective
To compare healthcare utilization and cost in individuals with spine pain who undergo no physical therapy, standard physical therapy, or physical therapy in an integrated practice unit model.
Design
A cost-effectiveness analysis
Setting
Multi-site outpatient physical therapy clinics within a single metropolitan region
Participants
Individuals with de-identified claims data from a single insurance provider under Medicare Advantage with a spine-pain related diagnosis from January 2019-December 2021.
Interventions
Patients were categorized into three cohorts: No physical therapy (NoPT), standard physical therapy (SPT), and physical therapy within an integrated practice unit model (IPUPT) based on their physical therapy history during the data collection period.
Main Outcome Measures
Number and percentage of patients reporting claims, number of claims/patient per year, paid amount, and number of RVUs were compared across groups using chi-square or one-way ANOVA with multiple comparisons corrections.
Results
Data from 13,569 patients was included in this study. The number of patients with spine-related inpatient claims was highest in the SPT group (2.8%) compared to the IPUPT (1.5%) and NoPT (1.3%) groups (p=0.004). Outpatient care utilization was driven by radiology (54.7%) and laboratory (22.1%) claims and was lowest in the IPUPT group (N=1,096; 56.8%) compared to the SPT group (N=1,654; 68.3%) and NoPT group (N=9,150; 99.3%, p<0.001). The SPT group was most costly per person ($2,243.66(11,048.94)) followed by the NoPT ($1,352.01(6,419.2), p<0.001) and the IPUPT ($1,259.88(9,061.23), p<0.001) groups. The greatest contributor to cost was outpatient procedures, averaging $142.39(1,046.26) per person.
Conclusion
An integrated multidisciplinary rehabilitation model may be a cost-effective method of multimodal care in individuals with spine pain.
