CONTEXT: For many patients, adhering to postmenopausal osteoporosis treatment is a challenge. Higher treatment satisfaction is associated with greater persistence with these therapies, which is associated with better outcomes. OBJECTIVE: This study aimed to evaluate the change in treatment satisfaction in postmenopausal women who were suboptimally adherent to daily or weekly oral bisphosphonates and who transitioned to denosumab vs a monthly oral bisphosphonate. DESIGN AND SETTING: Pooled data of outpatients from two international, multicenter, randomized, open-label studies were analyzed. PATIENTS: Postmenopausal women (n = 1703) age 55 years or greater with low bone mineral density who were suboptimally adherent with prior oral bisphosphonate therapy, as assessed by the Osteoporosis-Specific Morisky Medication Adherence Scale, were included in the study. INTERVENTIONS: Patients received denosumab, a fully human monoclonal antibody to receptor activator of nuclear factor-kappa B ligand, 60 mg s.c. every 6 months vs the oral bisphosphonates ibandronate or risedronate, 150 mg once monthly for 12 months. MAIN OUTCOME MEASURES: Change in treatment satisfaction scores from baseline to months 6 and 12 were measured using the Treatment Satisfaction Questionnaire for Medication (TSQM). The TSQM is a validated tool that measures perception of four domains of treatment satisfaction: effectiveness, side effects, convenience, and global satisfaction. RESULTS: Patients in both treatment groups showed improvement from baseline for all four TSQM domains at 6 and 12 months. However, the denosumab group had significantly (all P < .001) greater improvements among all four TSQM domains at 6 and 12 months compared with the oral bisphosphonate group. CONCLUSIONS: Women with low adherence to oral bisphosphonates reported greater treatment satisfaction when transitioned to denosumab vs switching to a monthly oral bisphosphonate.
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Palacios et al. (2014) studied this question.