If you say a word enough times it begins to sound like gibberish. Try it: “access, access, access, access, access, access” What does ‘access’ mean anymore? “Lived experience, lived experience, lived experience, lived experience, lived experience.” Does it sound empty yet? New terms ought to be used judiciously. In the field of health economics and outcomes research (HEOR), a new term is budding: patient-centered Health Technology Assessment (HTA). Will patient-centered HTA bloom into a useful technique or wither into a nebulous buzzword?
Health Technology Assessment, also called value assessment, refers to the process of estimating the value of drugs and other medical interventions. Clinical evidence, economic modeling, medical ethics, and cost-effectiveness analysis compose HTAs. The results inform which treatments health insurers cover, which in turn affects patients’ access to treatment, which in turn affects the patients’ caregivers, families, dependents, and employers. While HTAs are designed to help payers–in some cases governments– allocate resources and control rising healthcare costs, patients are the ultimate stakeholders.
In the seventeen years since researchers first proposed “patient-based health technology assessments,” key institutions have made progress. PCORI, ICER, and other agencies invite patient comments on HTAs and listen to patients on their advisory panels. Avalere, a healthcare consultancy, published guidance on assessing patient-value. Nonetheless, the methods for including the patient perspective in HTAs are neither well-defined, nor widely adopted.
Tensions in HTA Objectives
Implementing patient-centered HTAs is challenging. Doing so demands large budgets for research, modeling, and patient outreach. Tensions among HTA stakeholders, described below, have slowed progress:
Payer vs. Patient Objectives
Technology Assessments were founded in part to control health insurance spending. Is this objective–to keep costs down, or more controversially “to ration care,” at odds with patient objectives? While some economists fear these diverging interests cannot be overcome, patient perspectives may benefit payers. As Bridges and Jones (2007) point out,
“By adopting a patient-based approach, it is quite probable that we end up finding society paying less in aggregate, while getting better outcomes. Paradoxically, we could find ourselves having a more cost-effective outcome than if we were obsessed with cost-effectiveness because we would empower patients and stop giving them care that they neither want nor need.”
Population vs Individuals
Patients long to be heard and seen; they want their unique, individual experiences captured. Health economic evaluation, however, occurs on the population level. HTAs determine the best allocation of resources for a population of insured people on a given health plan or the general public. Guidelines on cost-effectiveness analysis state that weights assigning value to health states should be “based on community preferences rather than those of patients” or providers. Patients value health states differently from the general public. Evidence shows, patients rank problems related to mobility and daily activities as less severe, but consider problems related to pain, discomfort, and anxiety as more severe.
Health economists devoted to patient-centricity must employ methods that acknowledge individual variation in preferences, while uncovering population-level insights. For example, one wheel-chair bound patient with Spinal Muscular Atrophy (SMA) measures health progress by his ability to open the refrigerator door. How can outcomes important to patients be reflected in HTAs? While it’s impossible to consider every patient’s preference, adopting patient-relevant endpoints and surrogate endpoints uncovers what “value” means for patients and caregivers.
Qualitative vs Quantitative
HEOR techniques require statistical prowess. As one patient leader noted, ‘data people’ developing HTAs are often removed from the touchy-feely side of healthcare. In many cases (though not always!) economic modelers are disconnected from the day-to-day emotions of patients and caregivers. An ongoing challenge is bridging quantitative approaches to value assessment with qualitative approaches. ICER’s value framework considers ‘additional benefits’ of therapies, like reduced caregiver burden. New techniques may emerge to bridge this gap. The points of tension in HTAs –payers vs. patients, populations vs individuals, and qualitative vs quantitative– are intricately related. To overcome these barriers, drug manufacturers, patient organizations, technology companies, and payers must collaboratively design HTA methods.