4.7 Article

Systematic comparisons between Lyme disease and post- treatment Lyme disease syndrome in the U.S. with administrative claims data

Journal

EBIOMEDICINE
Volume 90, Issue -, Pages -

Publisher

ELSEVIER
DOI: 10.1016/j.ebiom.2023.104524

Keywords

Post-treatment Lyme disease syndrome; PTLDS; Chronic Lyme disease; Comorbidity; EHR; Claims data; Administrative data

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This study used a large administrative dataset to investigate post-treatment Lyme disease syndrome (PTLDS). The results showed that PTLDS patients had similar age and temporal distributions compared to patients with resolved Lyme disease, but had higher rates of certain chronic conditions. There were no significant differences in the use of antibiotics between PTLDS and resolved Lyme disease patients. This research is important for understanding the etiology and diagnosis of PTLDS.
Background Post-treatment Lyme disease syndrome (PTLDS) is used to describe Lyme disease patients who have the infection cleared by antibiotic but then experienced persisting symptoms of pain, fatigue, or cognitive impairment. Currently, little is known about the cause or epidemiology of PTLDS. Methods We conducted a data-driven study with a large nationwide administrative dataset, which consists of more than 98 billion billing and 1.4 billion prescription records between 2008 and 2016, to identify unique aspects of PTLDS that could have diagnostic and etiologic values. We defined PTLDS based on its symptomatology and compared the demographic, longitudinal changes of comorbidity, and antibiotic prescriptions between patients who have Lyme with absence of prolonged symptoms (APS) and PTLDS. Findings The age and temporal distributions were similar between Lyme APS and PTLDS. The PTLDS-to-Lyme APS case ratio was 3.42%. The co-occurrence of 3 out of 19 chronic conditions were significantly higher in PTLDS versus Lyme APS-odds ratio and 95% CI for anemia, hyperlipidemia, and osteoarthrosis were 1.46 (1.11-1.92), 1.39 (1.15-1.68), and 1.62 (1.23-2.12) respectively. We did not find significant differences between PTLDS and Lyme APS for the number of types of antibiotics prescribed (incidence rate ratio = 1.009, p = 0.90) and for the prescription of each of the five antibiotics (FDR adjusted p values 0.72-0.95). Interpretation PTLDS cases have more codes corresponding to anemia, hyperlipidemia, and osteoarthrosis compared to Lyme APS. Our finding of hyperlipidemia is consistent with a dysregulation of fat metabolism reported by other researchers, and further investigation should be conducted to understand the potential biological relationship be-tween the two.

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