Prevalence and Correlates of Hypertension Unawareness among Lebanese Adults: The Need to Target Those "left Behind"

Abstract

Introduction. Hypertension unawareness is context-specific, and our understanding of factors associated with it has implications on primary healthcare practices locally and contributes to achieving cardiovascular disease (CVD) targets, globally. In this study, we examine the prevalence and correlates of hypertension unawareness among adult Lebanese population. Methods. The study sample included a nationally representative sample of 2214 adults ≥25 years of age from the Noncommunicable Disease (NCD) Risk Factor WHO-STEPS cross-sectional survey conducted in Lebanon. In the first step, hypertension was assessed based on reported morbidity using face-To-face interviews, and in the second step, based on blood pressure (BP) measurement. We defined hypertension prevalence as systolic/diastolic blood pressure ≥140/90 mmHg and/or ongoing treatment for hypertension. Hypertension unawareness was described as lack of prior knowledge of hypertensive status. Those responding negatively to the face-To-face interview question "whether they had ever been told by a health worker that they have hypertension"were labelled as "apparently healthy."Results. Overall prevalence of hypertension was 30.7%. A total of 369 subjects were unaware of their condition, representing 51.8% of all hypertensives and 15.9% of the apparently healthy. Multivariable analysis controlling for a number of confounders showed that, among apparently healthy participants, insurance coverage and contact with healthcare services were not associated with higher likelihood for hypertension awareness. Among all hypertensives, hypertension unawareness was significantly higher in the young, those with BMI <25 kg/m2 (adjusted OR (aOR): 2.52; 95% CI: 1.35-4.69), no CVD (aOR: 3.30; 95% CI: 1.74-6.29), and participants with no reported family history of hypertension (aOR: 4.87; 95% CI: 2.89-8.22), compared to their counterparts. Conclusion. In Lebanon, unawareness of hypertension occurred in those clinically least perceived to be at risk. These findings are key for optimizing current screening practices and informing NCD prevention efforts in the country and contribute to achieving global targets of the SDGs of "leaving no one behind."