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  • Title: Cost-effectiveness of two self-care interventions to reduce disability associated with back pain.
    Author: Strong LL, Von Korff M, Saunders K, Moore JE.
    Journal: Spine (Phila Pa 1976); 2006 Jul 01; 31(15):1639-45. PubMed ID: 16816756.
    Abstract:
    STUDY DESIGN: Two randomized, controlled trials. OBJECTIVE: To evaluate the incremental cost-effectiveness of psychologist-led and lay-led interventions in reducing disability in 2 cohorts of primary care patients with back pain. SUMMARY OF BACKGROUND DATA: Although activating self-care interventions have been advanced as effective tools to reduce back pain-related activity limitations, few studies have evaluated the added costs of these programs relative to their added benefits. METHODS: We estimated the incremental benefits and incremental costs associated with 2 self-care interventions for primary care patients with back pain. Effectiveness was measured as the number of low-impact back pain days (i.e., days when patients were satisfied with their level of back pain) over a 1-year follow-up. Costs of back-pain related services were estimated from health plan cost data. Incremental cost-effectiveness ratios were calculated for each intervention to determine the costs associated with an additional low-impact back pain day. RESULTS: Patients assigned to the lay and psychologist interventions had a mean of 14.3 (95% confidence interval [CI] -2.7 to 30.9) and 26.2 (95% CI 9.1-44.4) additional low-impact back pain days, respectively, compared with patients receiving usual care. The incremental per-person costs of the lay-led and psychologist-led interventions were dollar 139 (95% CI - dollar 62.13 to dollar 321.76) and dollar 161 (95% CI dollar 51.18 to dollar 275.93), respectively. The mean cost of an additional low-impact back pain day was dollar 9.70 for the lay-led intervention and dollar 6.13 for the psychologist-led intervention. CONCLUSIONS: Both the lay and psychologist interventions were associated with modest improvements in outcomes but with somewhat higher costs compared to usual care.
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