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Kopp PT, Yang C, Yang H, Katz JN, Paltiel AD, Hunter DJ, Callahan LF, Mihalko SL, Newman JJ, DeVita P, Loeser RF, Miller GD, Messier SP, Losina E. Cost-Effectiveness of Community-Based Diet and Exercise for Patients with Knee Osteoarthritis and Obesity or Overweight. Arthritis Care Res (Hoboken) 2024; 76:1018-1027. [PMID: 38450873 DOI: 10.1002/acr.25323] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/27/2023] [Revised: 01/19/2024] [Accepted: 03/05/2024] [Indexed: 03/08/2024]
Abstract
OBJECTIVE Obesity exacerbates pain and functional limitation in persons with knee osteoarthritis (OA). In the Weight Loss and Exercise for Communities with Arthritis in North Carolina (WE-CAN) study, a community-based diet and exercise (D + E) intervention led to an additional 6 kg weight loss and 20% greater pain relief in persons with knee OA and body mass index (BMI) >27 kg/m2 relative to a group-based health education (HE) intervention. We sought to determine the incremental cost-effectiveness of the usual care (UC), UC + HE, and UC + (D + E) programs, comparing each strategy with the "next-best" strategy ranked by increasing lifetime cost. METHODS We used the Osteoarthritis Policy Model to project long-term clinical and economic benefits of the WE-CAN interventions. We considered three strategies: UC, UC + HE, and UC + (D + E). We derived cohort characteristics, weight, and pain reduction from the WE-CAN trial. Our outcomes included quality-adjusted life years (QALYs), cost, and incremental cost-effectiveness ratios (ICERs). RESULTS In a cohort with mean age 65 years, BMI 37 kg/m2, and Western Ontario and McMaster Universities Osteoarthritis Index pain score 38 (scale 0-100, 100 = worst), UC leads to 9.36 QALYs/person, compared with 9.44 QALYs for UC + HE and 9.49 QALYS for UC + (D + E). The corresponding lifetime costs are $147,102, $148,139, and $151,478. From the societal perspective, UC + HE leads to an ICER of $12,700/QALY; adding D + E to UC leads to an ICER of $61,700/QALY. CONCLUSION The community-based D + E program for persons with knee OA and BMI >27kg/m2 could be cost-effective for willingness-to-pay thresholds greater than $62,000/QALY. These findings suggest that incorporation of community-based D + E programs into OA care may be beneficial for public health.
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Affiliation(s)
- Paul T Kopp
- Brigham and Women's Hospital, Boston, Massachusetts
| | | | - Heidi Yang
- Brigham and Women's Hospital, Boston, Massachusetts
| | - Jeffrey N Katz
- Brigham and Women's Hospital and Harvard Medical School, Boston, Massachusetts
| | | | - David J Hunter
- University of Sydney, Sydney, New South Wales, Australia
| | | | | | | | - Paul DeVita
- East Carolina University, Greenville, North Carolina
| | | | - Gary D Miller
- Wake Forest University, Winston-Salem, North Carolina
| | | | - Elena Losina
- Brigham and Women's Hospital and Harvard Medical School, Boston, Massachusetts
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Kumara MT, Cleveland RJ, Kostic AM, Weisner SE, Allen KD, Golightly YM, Welch H, Dale M, Messier SP, Hunter DJ, Katz JN, Callahan LF, Losina E. Budget impact of the Walk With Ease program for knee osteoarthritis. OSTEOARTHRITIS AND CARTILAGE OPEN 2024; 6:100463. [PMID: 38562164 PMCID: PMC10982564 DOI: 10.1016/j.ocarto.2024.100463] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/22/2023] [Accepted: 03/13/2024] [Indexed: 04/04/2024] Open
Abstract
Objective Walk With Ease (WWE) is an effective low-cost walking program. We estimated the budget impact of implementing WWE in persons with knee osteoarthritis (OA) as a measure of affordability that can inform payers' funding decisions. Methods We estimated changes in two-year healthcare costs with and without WWE. We used the Osteoarthritis Policy (OAPol) Model to estimate per-person medical expenditures. We estimated total and per-member-per-month (PMPM) costs of funding WWE for a hypothetical insurance plan with 75,000 members under two conditions: 1) all individuals aged 45+ with knee OA eligible for WWE, and 2) inactive and insufficiently active individuals aged 45+ with knee OA eligible. In sensitivity analyses, we varied WWE cost and efficacy and considered productivity costs. Results With eligibility unrestricted by activity level, implementing WWE results in an additional $1,002,408 to the insurance plan over two years ($0.56 PMPM). With eligibility restricted to inactive and insufficiently active individuals, funding WWE results in an additional $571,931 over two years ($0.32 PMPM). In sensitivity analyses, when per-person costs of $10 to $1000 were added with 10-50% decreases in failure rate (enhanced sustainability of WWE benefits), two-year budget impact varied from $242,684 to $6,985,674 with unrestricted eligibility and from -$43,194 (cost-saving) to $4,484,122 with restricted eligibility. Conclusion Along with the cost-effectiveness of WWE at widely accepted willingness-to-pay thresholds, these results can inform payers in deciding to fund WWE. In the absence of accepted thresholds to define affordability, these results can assist in comparing the affordability of WWE with other behavioral interventions.
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Affiliation(s)
- Mahima T. Kumara
- Policy and Innovation eValuation in Orthopaedic Treatments (PIVOT) Center, Department of Orthopaedic Surgery, Brigham and Women's Hospital, Boston, MA, USA
- Orthopaedic and Arthritis Center for Outcomes Research (OrACORe), Department of Orthopaedic Surgery, Brigham and Women's Hospital, Boston, MA, USA
| | - Rebecca J. Cleveland
- Thurston Arthritis Research Center, Department of Medicine, University of North Carolina at Chapel Hill, Chapel Hill, NC, USA
| | - Aleksandra M. Kostic
- Policy and Innovation eValuation in Orthopaedic Treatments (PIVOT) Center, Department of Orthopaedic Surgery, Brigham and Women's Hospital, Boston, MA, USA
- Orthopaedic and Arthritis Center for Outcomes Research (OrACORe), Department of Orthopaedic Surgery, Brigham and Women's Hospital, Boston, MA, USA
| | - Serena E. Weisner
- Thurston Arthritis Research Center, Osteoarthritis Action Alliance, University of North Carolina, Chapel Hill, NC, USA
| | - Kelli D. Allen
- Durham VA Health Care System, Durham, University of North Carolina at Chapel Hill, Chapel Hill, NC, USA
| | - Yvonne M. Golightly
- College of Allied Health Professions, University of Nebraska Medical Center, Omaha, NE, USA
- Thurston Arthritis Research Center and Osteoarthritis Action Alliance, University of North Carolina, Chapel Hill, NC, USA
| | - Heather Welch
- Montana Department of Public Health and Human Services, Helena, MT, USA
| | - Melissa Dale
- Montana Department of Public Health and Human Services, Helena, MT, USA
| | - Stephen P. Messier
- Department of Health and Exercise Science, Wake Forest University, Salem, NC, USA
| | - David J. Hunter
- Sydney Musculoskeletal Health, Kolling Institute, University of Sydney and Rheumatology Department, Royal North Shore Hospital, Sydney, Australia
| | - Jeffrey N. Katz
- Policy and Innovation eValuation in Orthopaedic Treatments (PIVOT) Center, Department of Orthopaedic Surgery, Brigham and Women's Hospital, Boston, MA, USA
- Orthopaedic and Arthritis Center for Outcomes Research (OrACORe), Department of Orthopaedic Surgery, Brigham and Women's Hospital, Boston, MA, USA
- Harvard Medical School, Boston, MA, USA
- Division of Rheumatology, Inflammation and Immunity, Brigham and Women's Hospital, Boston, MA, USA
| | - Leigh F. Callahan
- Thurston Arthritis Research Center, Departments of Medicine and Orthopaedics, Osteoarthritis Action Alliance, Department of Epidemiology, Gillings School of Global Public Health, University of North Carolina, Chapel Hill, USA
| | - Elena Losina
- Policy and Innovation eValuation in Orthopaedic Treatments (PIVOT) Center, Department of Orthopaedic Surgery, Brigham and Women's Hospital, Boston, MA, USA
- Orthopaedic and Arthritis Center for Outcomes Research (OrACORe), Department of Orthopaedic Surgery, Brigham and Women's Hospital, Boston, MA, USA
- Harvard Medical School, Boston, MA, USA
- Department of Epidemiology, Harvard T.H. Chan School of Public Health, Boston, MA, USA
- Department of Biostatistics, Boston University School of Public Health, Boston, MA, USA
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