Long COVID disability burden in US adults

Area of Science:

• Public Health and Epidemiology
• Health Services Research
• Medical Research Funding Analysis

Background:

• Long COVID, identified five years ago, lacks effective treatments and population-based data on its disability burden in the US.
• This syndrome disproportionately affects females, mirroring patterns seen in conditions like Myalgic Encephalomyelitis/Chronic Fatigue Syndrome (ME/CFS) and dysautonomia.
• Existing National Institutes of Health (NIH) funding mechanisms may not adequately address the disability burden of emerging chronic conditions.

Purpose of the Study:

• To quantify the Years Lived with Disability (YLDs) for Long COVID in US adults.
• To compare NIH funding for Long COVID and other conditions against their respective disability burdens, analyzing sex-based disparities.
• To assess the correlation between YLDs and NIH funding across various medical conditions.

Main Methods:

• Calculated Long COVID YLDs using prevalence data from Census Bureau surveys (Sept 2022-Aug 2023) and disability weights from the Global Burden of Disease Study.
• Compared actual and YLD-commensurate average annual NIH funding (FY2022-2024) for Long COVID and 68 comparator conditions, stratified by sex predominance.
• Employed linear regression to model the relationship between YLDs and funding, controlling for other factors.

Main Results:

• Long COVID YLDs are comparable to those of Alzheimer's disease and Asthma, yet received only 14% of its commensurate NIH funding ($106M vs. $739.8M).
• ME/CFS is severely underfunded, receiving less than 1% of its proportional funding based on YLDs.
• Female-predominant conditions receive significantly less funding per YLD ($1.3M) compared to male-predominant conditions ($7.0M), a difference of 5.2 times (p=0.007).

Conclusions:

• The substantial disability burden of Long COVID and other chronic conditions necessitates greater consideration in NIH funding decisions.
• Biological sex is a critical factor influencing research funding allocation and should be explicitly addressed.
• Current funding models appear insufficient to match the disability impact of Long COVID and other complex chronic illnesses, particularly those affecting females.