Cardiovascular Health Change Patterns After Multifaceted Antihypertensive Intervention and Cardiovascular Outcomes: A Post Hoc Analysis of CRHCP Trial.
Xiaofan Guo, Guozhe Sun, Ziyi Xie et al.
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In 30 seconds
This post hoc analysis of the China Rural Hypertension Control Project, a community-based randomized trial, examined cardiovascular health (CVH) changes and subsequent cardiovascular outcomes among 26,700 participants receiving intensive blood pressure management from nonphysician providers. At 36 months, the intervention improved Life’s Simple 7 scores (net difference: 0.52; 95% CI: 0.38-0.66). Improved CVH was associated with lower cardiovascular risk (HR: 0.71; 95% CI: 0.54-0.89), with the largest reduction among participants whose blood pressure improved alongside behavioral or metabolic gains (HR: 0.57; 95% CI: 0.30-0.84). Blood pressure accounted for most of the observed effect.
Key findings
- At 36 months, Life’s Simple 7 scores improved, with a net difference of 0.52 (95% CI: 0.38-0.66).
- Improved CVH was associated with lower cardiovascular risk (HR: 0.71; 95% CI: 0.54-0.89).
- The greatest risk reduction occurred with blood pressure improvement plus behavioral or metabolic gains (HR: 0.57; 95% CI: 0.30-0.84); blood pressure improvement alone was also associated with lower risk (HR: 0.76; 95% CI: 0.55-0.98).
- Mediation analyses attributed 67.5% of the observed effect to blood pressure, 8.0% to behavioral factors, and minimal contribution to metabolic factors.
Why it matters
The findings suggest that multidimensional cardiovascular health scores can conceal uneven responses to intervention: blood pressure changes were sustained and accounted for most of the observed risk reduction, while other domains changed less. This helps clarify how a community-delivered, multifaceted hypertension intervention may relate to later cardiovascular outcomes and underscores the value of examining individual health domains alongside composite measures.
What to keep in mind
This was a post hoc analysis, and associations between domain-specific changes and subsequent outcomes do not establish that those changes caused the risk differences.