Modified Outpatient Physical Therapy Improvement in Movement Assessment Log (mOPTIMAL): A Responsive and Reliable Tool for Patients with Non-Operative Shoulder Pain.

Background: Medicare regulations require that physical therapists report functional limitations and severity modifiers utilizing a claims-based data collection tool. The Modified Outpatient Physical Therapy Improvement in Movement Assessment Log (mOPTIMAL) captures key constructs about patient confidence and difficulty but has not been evaluated for responsiveness/ reliability during a routine clinical encounter with patients who have shoulder pathology. The purposes of this retrospective study are to 1) explore if mOPTIMAL changes after a single session with a physical therapist, and 2) determine if the tool is reliable among people with non-operative shoulder pain. Methods: We included 106 individuals (58% female; mean age 45.8; range: 18-94 yrs.) with "non-operative" shoulder pathology who were seen in outpatient physical therapy from 2011 to 2012. Subjects completed a mOPTIMAL survey and a pain scale before and immediately after the initial physical therapy visit. The mOPTIMAL is a patient-centered instrument that assesses how much "Difficulty" and "Confidence" a client has in performing a battery of functional tasks. T-tests, Cronbach's Alpha, and Intra-class Correlations were used to assess responsiveness, internal consistency, and reliability, respectively. Results: After a single visit, participants reported improved Confidence with sleeping, dressing/ bathing, throwing, carrying, and lifting (adjusted for ceiling effects; p<0.002) but no change in pain. Cronbach's Alpha and Intra-class Correlations were excellent (0.821-0.923; 0.967, respectively). Conclusions: mOPTIMAL is a reliable and responsive tool with excellent internal consistency. This observational study revealed that patient Confidence may change independent of Pain after a single physical therapy visit. Taken together, the mOPTIMAL appears to be an excellent tool to report severity modifiers in compliance with Medicare regulations.