P-593 a Mixed Methods Process Evaluation Alongside the Multicentre Active Trial – A Multifaceted Personalized Ehealth Intervention for Working-Age Knee Arthroplasty Patients to Enhance Return to Work and Sports

Introduction Return to work and sports is challenging among working-age knee arthroplasty patients. No intervention study has been performed targeting these outcomes. The ACTIVE trial was developed in which patients receive the multifaceted personalized eHealth application iRecover. We aimed to evaluate the process of the intervention to optimize future development and implementation. Methods Working patients on the waiting list for knee arthroplasty were included. The intervention included the eHealth application iRecover, an activity tracker, a case-manager and Goal Attainment Scaling. Using the Linnan and Steckler framework we evaluated data from patients’ questionnaires, a study log and iRecover application weblogs. Semi-structured interviews were held with six patients. Results Out of 822 eligible patients, 293 were included, of which 143 received the intervention. Reach was 36%, all patients received log-in details for iRecover (100%) and 99% of the patients opened the application. Based on 1-10 point scores, at 6 weeks and 6 months postoperative, the iRecover application was rated (mean, standard deviation) a 7.3 (1.6) and 7.2 (1.5), the activity tracker a 7.8 (1.4) and 8.0 (1.3), the case-manager a 7.4 (1.4) measured at 6 weeks only, and Goal Attainment Scaling a 7.2 (1.5) and 6.6 (1.7). The interviews revealed that patients found the intervention motivating and enhancing for their recovery. Discussion Although patients were satisfied, for successful implementation, additionally facilitators and barriers for stakeholders need to be explored. Conclusion Our results indicate that patients experience the intervention as a valuable addition to care as usual and continued development and implementation requires attention and priority.