Cardiovascular, Renal, and Pulmonary Risks of Long COVID: A Retrospective Cohort Study Stratified by Age and Sex.

Long COVID was associated with higher risk of most cardiovascular, renal, and pulmonary (CRP) outcomes across all age groups regardless of sex.

• The study analyzed 15 CRP outcomes in adults with documented COVID-19 classified by presence or absence of clinically recognized Long COVID.
• The global TriNetX network included more than 150 million patients; 2,613,432 adults were identified with COVID-19.
• After propensity score matching for age, sex, and common confounders, 315,612 matched individuals were included in the final analysis.
• Patients with preexisting outcomes of interest were excluded prior to matching.
• Findings remained directionally consistent across sensitivity analyses.

Relative risks for cardiovascular, renal, and pulmonary outcomes were disproportionately higher in younger adults (ages 18–50) compared with older age groups.

• The study stratified analyses by three age groups: 18–50, 51–64, and ≥65 years.
• Younger adults demonstrated higher relative risks despite potentially lower absolute risks compared with older adults.
• This age-stratified pattern was observed across cardiovascular, renal, and pulmonary outcome categories.
• The disproportionate relative risk in younger adults was identified as a key finding supporting the need for surveillance in this population.

Young women with Long COVID faced disproportionately higher relative risks for cardiovascular and renal outcomes, while young men faced disproportionately higher relative risks for pulmonary outcomes.

• Sex-stratified analyses were conducted within each age group.
• The differential sex-based pattern was most pronounced in the youngest age group (18–50 years).
• Cardiovascular and renal outcome risks were particularly elevated in young women.
• Pulmonary outcome risks were particularly elevated in young men.
• This sex-stratified finding suggests that Long COVID may manifest differently by sex, especially in younger adults.

Prior SARS-CoV-2 vaccination was not consistently associated with reduced cardiovascular, renal, or pulmonary risk in individuals with Long COVID.

• Vaccination status was examined as a potential modifier of CRP outcome risk.
• The association between prior vaccination and CRP outcomes was not consistent across the analyses.
• This finding was noted as an important observation given widespread interest in vaccination as a Long COVID risk-reduction strategy.
• The authors did not conclude that vaccination was protective against Long COVID-associated CRP outcomes based on their data.

The study used propensity score matching to control for age, sex, and common confounders when comparing Long COVID versus non-Long COVID COVID-19 survivors.

• The retrospective cohort design used the TriNetX global network, a large real-world database.
• Adults with COVID-19 were classified by the presence or absence of clinically recognized Long COVID as documented in medical records.
• Propensity score matching was applied after exclusion of patients with preexisting outcomes of interest.
• Both absolute risks and relative risks were calculated for all 15 CRP outcomes.
• The large matched sample of 315,612 individuals provided substantial statistical power for subgroup analyses.

The authors concluded that findings support the need for continuing surveillance and risk-reduction strategies for cardiovascular and related disorders in Long COVID.

• The study identified elevated CRP risks even in younger adults, a group not traditionally prioritized for cardiovascular surveillance.
• The sex-differentiated risk patterns suggest that monitoring and prevention strategies may need to be tailored by both age and sex.
• The authors framed their conclusions around clinical implications for ongoing Long COVID management.
• The population-level scope of the TriNetX dataset (>150 million patients) was cited as supporting the generalizability of findings.