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Leung MTY, Turner JP, Marquina C, Ilomaki J, Tran T, Bell JS. Trajectories of oral bisphosphonate use after hip fractures: a population-based cohort study. Osteoporos Int 2024; 35:669-678. [PMID: 38195713 PMCID: PMC10957648 DOI: 10.1007/s00198-023-06974-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/03/2023] [Accepted: 11/07/2023] [Indexed: 01/11/2024]
Abstract
Bisphosphonates prevent future hip fractures. However, we found that one in six patients with hip fractures had a delay in bisphosphonate initiation and another one-sixth discontinued treatment within 12 months after discharge. Our results highlight the need to address hesitancy in treatment initiation and continuous monitoring. PURPOSE Suboptimal antiresorptive use is not well understood. This study investigated trajectories of oral bisphosphonate use following first hip fractures and factors associated with different adherence and persistence trajectories. METHODS We conducted a retrospective study of all patients aged ≥ 50 years dispensed two or more bisphosphonate prescriptions following first hip fracture in Victoria, Australia, from 2012 to 2017. Twelve-month trajectories of bisphosphonate use were categorized using group-based trajectory modeling. Factors associated with different trajectories compared to the persistent adherence trajectory were assessed using multivariate multinomial logistic regression. RESULTS We identified four patterns of oral bisphosphonate use in 1811 patients: persistent adherence (66%); delayed dispensing (17%); early discontinuation (9%); and late discontinuation (9%). Pre-admission bisphosphonate use was associated with a lower risk of delayed dispensing in both sexes (relative risk [RR] 0.28, 95% confidence interval [CI] 0.21-0.39). Older patients ( ≥ 85 years old versus 50-64 years old, RR 0.38, 95% CI 0.22-0.64) had a lower risk of delayed dispensing. Males with anxiety (RR 9.80, 95% CI 2.24-42.9) and females with previous falls had increased risk of early discontinuation (RR 1.80, 95% CI 1.16-2.78). CONCLUSION Two-thirds of patients demonstrated good adherence to oral bisphosphonates over 12 months following hip fracture. Efforts to further increase post-discharge antiresorptive use should be sex-specific and address possible persistent uncertainty around delaying treatment initiation.
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Affiliation(s)
- Miriam T Y Leung
- Centre for Medicine Use and Safety, Faculty of Pharmacy and Pharmaceutical Sciences, Monash University (Parkville Campus), 381 Royal Parade, Parkville, Melbourne, VIC, 3052, Australia.
| | - Justin P Turner
- Centre for Medicine Use and Safety, Faculty of Pharmacy and Pharmaceutical Sciences, Monash University (Parkville Campus), 381 Royal Parade, Parkville, Melbourne, VIC, 3052, Australia
- Faculty of Pharmacy, University of Montreal, Montreal, Quebec, Canada
- Centre de Recherche, Institut Universitaire de Gériatrie de Montréal, Montreal, QC, Canada
- Faculty of Pharmacy, Laval University, Quebec, Canada
| | - Clara Marquina
- Centre for Medicine Use and Safety, Faculty of Pharmacy and Pharmaceutical Sciences, Monash University (Parkville Campus), 381 Royal Parade, Parkville, Melbourne, VIC, 3052, Australia
| | - Jenni Ilomaki
- Centre for Medicine Use and Safety, Faculty of Pharmacy and Pharmaceutical Sciences, Monash University (Parkville Campus), 381 Royal Parade, Parkville, Melbourne, VIC, 3052, Australia
- Department of Epidemiology and Preventive Medicine, Monash University, Melbourne, Australia
| | - Tim Tran
- Pharmacy Department, Austin Health, Melbourne, Australia
| | - J Simon Bell
- Centre for Medicine Use and Safety, Faculty of Pharmacy and Pharmaceutical Sciences, Monash University (Parkville Campus), 381 Royal Parade, Parkville, Melbourne, VIC, 3052, Australia
- Department of Epidemiology and Preventive Medicine, Monash University, Melbourne, Australia
- Faculty of Health Sciences, University of Eastern Finland, Kuopio, Finland
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