Centre for the Health Economy, Macquarie University, Sydney, NSW, Australia.
Centre for the Health Economy, Macquarie University, Sydney, NSW, Australia.
Value Health. 2019 Mar;22(3):293-302. doi: 10.1016/j.jval.2018.09.2840. Epub 2018 Dec 24.
Migraine is a common, chronic, disabling headache disorder. Triptans, used as an acute treatment for migraine, are available via prescription in Australia. An Australian Therapeutic Goods Administration (TGA) committee rejected reclassifying sumatriptan and zolmitriptan from prescription medicine to pharmacist-only between 2005 and 2009, largely on the basis of concerns about patient risk. Nevertheless, pharmacist-only triptans may reduce migraine duration and free up healthcare resources.
To estimate the cost-effectiveness of reclassifying triptans from prescription-only to pharmacist-only in Australia.
The study design included decision-analytic modeling combining data from various sources. Behavior before and after reclassification was estimated using medical practitioner and patient surveys and also administrative data. Health outcomes included migraine frequency and duration as well as adverse events (AEs) discussed by the TGA committee. Efficacy and AEs were estimated using randomized controlled trials and observational studies.
Reclassifying triptans will reduce migraine duration but increase AEs. This will result in 337 quality-adjusted life-years gained at an increased cost of A$5.9 million over 10 years for all Australian adults older than 15 years (19.6 million). The incremental cost-effectiveness ratio was estimated to be A$17 412/quality-adjusted life-year gained.
The incremental cost-effectiveness ratio is likely to be considered cost-effective by Australian decision makers. Serotonin syndrome, a key concern of the TGA committee, had little impact on the results. Further research is needed regarding pharmacist-only triptan use by migraineurs currently using over-the-counter medicines and by nonmigraineurs, the efficacy of triptans, and the risk of cardiovascular and cerebrovascular AEs and chronic headaches with triptans.
偏头痛是一种常见的、慢性的、使人丧失能力的头痛疾病。曲坦类药物可用作偏头痛的急性治疗药物,在澳大利亚凭处方供应。澳大利亚治疗商品管理局(TGA)委员会在 2005 年至 2009 年期间,主要基于对患者风险的担忧,否决了将舒马曲坦和佐米曲坦从处方药重新分类为仅限药剂师供应的药物。然而,仅限药剂师供应的曲坦类药物可能会缩短偏头痛持续时间并释放医疗保健资源。
评估将曲坦类药物从凭处方供应重新分类为仅限药剂师供应在澳大利亚的成本效益。
该研究设计包括使用来自不同来源的数据进行决策分析建模。使用医生和患者调查以及行政数据来估计分类前和分类后的行为。健康结果包括偏头痛的频率和持续时间以及 TGA 委员会讨论的不良事件(AE)。使用随机对照试验和观察性研究来估计疗效和 AE。
将曲坦类药物重新分类将缩短偏头痛的持续时间,但会增加 AE。这将导致所有 15 岁以上的澳大利亚成年人在 10 年内获得 337 个质量调整生命年,并增加 590 万澳元的成本(1960 万澳元)。增量成本效益比估计为每获得 1 个质量调整生命年需花费 17412 澳元。
澳大利亚决策者可能认为增量成本效益比是划算的。TGA 委员会关注的关键问题——血清素综合征,对结果的影响很小。还需要进一步研究目前使用非处方药物的偏头痛患者和非偏头痛患者、曲坦类药物的疗效以及曲坦类药物与心血管和脑血管 AE 以及慢性头痛的风险。