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Stephen Soumerai, Sc.D . Professor Department of Ambulatory Care and Prevention Harvard Medical School and Harvard Pilgrim Health Care. Designing Pharmacy Benefits to Improve Quality and Contain Costs. Evolution of Prescription Drug Benefits Designs .
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Stephen Soumerai, Sc.D.ProfessorDepartment of Ambulatory Care and PreventionHarvard Medical School and Harvard Pilgrim Health Care Designing Pharmacy Benefits to Improve Quality and Contain Costs
Evolution of Prescription Drug Benefits Designs • Non-selective “blunt” tools can have unintended consequences, reduce clinical effectiveness, and increase total costs • Caps on number of prescriptions • Non-selective cost sharing • Triplicate prescriptions
Evolution of Prescription Drug Benefits Designs (cont’d) • Initial studies suggest that selective “sharp” tools that recognize relative effectiveness of drugs within a class can reduce inappropriate use and promote least-costly alternatives • Reference pricing • Tiered copayments • Evidence-based preferred drug lists and formularies
Unintended effects of non-selective cost-sharing policies • Reduces use of clinically important medicines (e.g., insulin, cardiac meds) • Increases use of institutional services • Nursing homes and hospitals (elderly) • Day hospital and acute care (patients with schizophrenia.) • May increase total health care costs • Mental health cost offsets 17 x drug savings
Time Series of Constant-Size Rxs per Continuously Eligible Patient per Month among Multiple Drug Recipients (N=860) and Other Outpatients (N=8002) Source: Soumerai et al, N Engl J Med 1987; 317: 550-6
DOSES REDUCED DOSES MAINTAINED Cap-induced Changes in Essential Drugs: “Droppers” vs. “Maintainers” 4 3 STANDARD DOSES PER ELIGIBLE PERSON 2 1 BASELINE 3 DRUG CAP $1 COPAY 0 JUL ‘80 JUL ‘81 JUL ‘82 Source: Soumerai et al, N Engl J Med 1994; 331: 650-5
Effects of Prescription Cap on Nursing Home Admissions 100% 95% New Jersey % outside nursing home 90% New Hampshire 85% Baseline Cap After Cap 80% Source: Soumerai et al, N Engl J Med 1991; 325: 1072-7
Effect of Cap on Emergency Mental Health Services Baseline Cap After Cap Source: Soumerai et al, N Engl J Med 1994; 331: 650-5
Changes in Use of Essential Drugs With Change in Cost Sharing Source: Tamblyn R et al, JAMA 2001; 285: 421-429
Effect of a $0.50 per Rx Copayment on Medication Use by Medicaid Recipients in South Carolina Source: Nelson, Reeder & Dickson. Med Care Aug. 1984 p. 724
Triplicate Policy Impact of Triplicate Prescription Program (TPP) on Benzodiazepine (BZ) Prescribing New Jersey New York (-54.8%) Source: Ross-Degnan et al (submitted)
Triplicate Policy New Jersey New York Impact of TPP on Use of BZ Indicated for Seizure and Panic Disorder Source: Ross-Degnan et al (submitted)
Reduction in BZ Use Among Patients with Seizure Disorder NJ Control Cohort NY Study Cohort Source: Simoni-Wastila et al (submitted)