Related Experiment Video
Updated: Aug 8, 2025

Inverse Probability of Treatment Weighting Propensity Score using the Military Health System Data Repository and National Death Index
Published on: January 8, 2020
One-Year Adverse Outcomes Among US Adults With Post-COVID-19 Condition vs Those Without COVID-19 in a Large
Andrea DeVries1, Sonali Shambhu1, Sue Sloop1
1Elevance Health, Inc, Indianapolis, Indiana.
Individuals with post-COVID-19 condition (PCC) face significantly higher risks of adverse cardiovascular and respiratory outcomes, plus increased mortality, one year after initial infection. This highlights the need for ongoing monitoring and specialized care for PCC patients.
Area of Science:
- Medical research
- Epidemiology
- Public health
Background:
- Post-acute sequelae of SARS-CoV-2, or post-COVID-19 condition (PCC), affects many individuals after initial infection.
- Long-term outcomes for individuals with PCC are not well understood.
Purpose of the Study:
- To quantify 1-year outcomes in individuals meeting a PCC definition.
- To compare these outcomes with a control group without COVID-19.
Main Methods:
- A case-control study utilized national insurance claims data, laboratory results, and mortality data.
- A propensity score-matched control group of individuals without COVID-19 was used.
- The study included 13,435 individuals with PCC and 26,870 controls, assessed over 12 months.
Main Results:
- The PCC cohort showed increased healthcare utilization for adverse outcomes, including cardiac arrhythmias (RR, 2.35), pulmonary embolism (RR, 3.64), and ischemic stroke (RR, 2.17).
- Higher risks were also observed for coronary artery disease, heart failure, COPD, and asthma.
- Mortality was higher in the PCC group (2.8%) compared to controls (1.2%).
Conclusions:
- Individuals surviving the acute phase of COVID-19 with PCC face elevated rates of adverse cardiovascular and pulmonary outcomes a year later.
- Findings underscore the necessity for continuous monitoring of at-risk individuals, especially for cardiovascular and pulmonary complications.
More Related Videos
Related Concept Videos
Types of Biopharmaceutical Studies: Controlled and Non-Controlled Approaches
Non-controlled studies, commonly employed for initial exploration, lack a control group, rendering them susceptible to biases and external influences. In contrast,...
Relative Risk
Classification of Illness
An illness is a response to a disease in which the person's level of functioning is changed compared with a previous level. The general classification of illness includes acute and chronic.
Acute illness is severe...
Actuarial Approach
Consider the example of a high-risk surgical procedure with significant early-stage mortality. A two-year clinical study is conducted,...
Chronic Obstructive Pulmonary Disease-IV: Assessement and Diagnostic Studies
Medical History
Pharmacovigilance
This process, termed pharmacovigilance, aims to detect, evaluate, and minimize harmful effects related to medication use. The data collection for pharmacovigilance depends on spontaneous reporting systems, where healthcare professionals or patients voluntarily report suspected ADRs.
In some cases, there...

