C-STOP Fracture Trial

Overview

The objective of the proposed research is to improve quality of care for older outpatients who present to Emergency Departments and Fracture Clinics with an osteoporosis-related wrist or other upper extremity fracture. Although most of these patients warrant evidence-based and guideline-recommended osteoporosis testing and treatment, numerous studies demonstrate treatment rates less than 10-20% in the year post-fracture. Several trials, including the investigators own prior studies, have tried to address this osteoporosis care-gap and have reported that various multifaceted interventions (combinations of patient and physician education, guidelines, and physician reminders) can modestly improve treatment rates compared with usual care, although 60-70% of the patients exposed to these interventions still remain untreated. The investigators believe that a case-manager (who identifies and independently sees patients in clinic, arranges bone mineral density \[BMD\] tests, and offers guideline-based treatment to those with low BMD) represents a potential solution that holds great promise. The investigators hypothesize that an osteoporosis case-manager will effectively and efficiently increase rates of osteoporosis treatment in older outpatients with upper extremity fractures when compared with a documented effective and cost-saving multifaceted intervention. To test this hypothesis the investigators propose a pragmatic patient-level randomized controlled comparative effectiveness trial with blinded outcomes ascertainment that compares the case-manager strategy with the multifaceted intervention.

Objective: To improve treatment of osteoporosis in older patients with upper extremity fractures. Background: Osteoporosis causes low bone mass and skeletal fragility leading to fractures of the hip, spine, and upper extremity that cause pain, deformity, disability, and even death. It affects 2 million older Canadians and costs us a billion dollars a year. Guidelines recommend aggressive treatment in older patients with osteoporosis-related fractures because risk of another fracture is 20% within 1-year and because bisphosphonate treatment reduces fracture risk by 50%. Unfortunately, less than 10% of older outpatients are treated for osteoporosis in the year post-fracture and even the most effective multifaceted interventions tested so far (i.e., combinations of patient education with physician guidelines and reminders) have only increased post-fracture osteoporosis treatment rates with bisphosphonates to 22%. Proposed Strategy: Osteoporosis case-managers will identify older fracture patients in Emergency Departments and Fracture Clinics; arrange bone mineral density (BMD) tests; meet with patients to counsel them and go over their results; and then offer and prescribe bisphosphonate treatment to those with low BMD. Hypothesis: An osteoporosis case-manager will effectively and efficiently increase rates of BMD testing and bisphosphonate treatment in older high-risk patients with upper extremity fractures compared with a previously tested effective and cost-saving multifaceted osteoporosis intervention (an active-comparator control consisting of telephone-based education for patients and treatment guidelines with reminders for family physicians). Specific Aims: To determine whether an osteoporosis case-manager strategy can: 1. Increase rates of osteoporosis treatment more than a multifaceted intervention 2. Increase rates of BMD testing more than a multifaceted intervention 3. Be cost-effective when compared with either multifaceted intervention or usual care Study Design: Randomized controlled comparative effectiveness trial with blinded (allocation-concealed) ascertainment of outcomes comparing case-managers to the multifaceted intervention. Eligible patients will be 50 years and older with an upper extremity fracture and not already treated with bisphosphonates, recruited from Emergency Departments and Fracture Clinics. Primary outcome will be the proportion starting bisphosphonates within 6-months. Secondary outcomes include BMD testing, any osteoporosis treatment, and appropriate care. Case-managers are expected to increase bisphosphonate treatment rates to 43% (achieved in our pilot trial) vs published multifaceted intervention rates of 22%. With alpha=0.05, beta=0.9, and 10% attrition rates, the total minimum required sample size is 240 patients. Using 1-year outcomes and micro-costing data from the trial and our published Markov decision analytic model for osteoporosis quality improvement interventions, the incremental costs and effectiveness of the case-manager will then be compared to both the multifaceted intervention and usual care. Major secondary outcome includes long-term treatment persistence, and to examine this question (e.g., 80% persistence rates with case-manager vs 50% persistence with multifaceted intervention) will require a sample size of at least 360 patients.