Greater use of antihypertensive medications explains lower blood pressures and better control in statin-treated than statin-eligible untreated adults.

Objective: Statins appear to have greater antihypertensive effects in observational studies than in randomized controlled trials. This study assessed whether more frequent treatment of hypertension contributed to better blood pressure (BP, mmHg) control in statin-treated than statin-eligible untreated adults in observational studies.

Methods: National Health and Nutrition Examination Surveys 2009-2020 data were analyzed for adults 21-75 years ( N  = 3814) with hypertension (BP ≥140/≥90 or treatment). The 2013 American College of Cardiology/American Heart Association Cholesterol Guideline defined statin eligibility. The main analysis compared BP values and hypertension awareness, treatment, and control in statin-treated and statin-eligible but untreated adults. Multivariable logistic regression was used to assess the association of statin therapy to hypertension control and the contribution of antihypertensive therapy to that relationship.

Results: Among adults with hypertension in 2009-2020, 30.3% were not statin-eligible, 36.9% were on statins, and 32.8% were statin-eligible but not on statins. Statin-treated adults were more likely to be aware of (93.4 vs. 80.6%) and treated (91.4 vs. 70.7%) for hypertension than statin-eligible adults not on statins. The statin-treated group had 8.3 mmHg lower SBP (130.3 vs. 138.6), and 22.8% greater control (<140/<90: 69.0 vs. 46.2%; all P values <0.001). The association between statin therapy and hypertension control [odds ratio 1.94 (95% confidence interval 1.53-2.47)] in multivariable logistic regression was not significant after also controlling for antihypertensive therapy [1.29 (0.96-1.73)].

Conclusion: Among adults with hypertension, statin-treated adults have lower BP and better control than statin-eligible untreated adults, which largely reflects differences in antihypertensive therapy.