Prevalence and associated factors of hypertension in adults in Lubumbashi, Democratic Republic of the Congo: A hospital cross-sectional study

Abstract

Introduction: Hypertension is the leading cause of morbidity and mortality from cardiovascular disease worldwide. Knowledge of its prevalence and associated factors helps to prevent its complications. The objectives of this study were to determine the prevalence and associated factors of hypertension in hospitals in Lubumbashi, Democratic Republic of the Congo.Methods: A cross-sectional analytic study was conducted among 520 adults from February 6 to November 30, 2023 in 2 health facilities in the city of Lubumbashi (Afia Polyclinic - Don Bosco and Jason Sendwe Provincial General Reference Hospital). Participants were selected by systematic random sampling. Hypertension was defined when the subject had a blood pressure (BP) ≥ 135/85 mmHg on diurnal Ambulatory Blood Pressure Monitoring (ABPM) or ≥ 180/110 mmHg on clinic oscillometric BP measurement (OBPM), or when he/she had self-reported hypertension and/or was taking antihypertensive medication even if diurnal ABPM was normal. Factors associated with hypertension were determined using a logistic regression model at the 5% significance level.Results: The prevalence of hypertension was 32.8% (95% CI: 28.9%-37.0%). Factors significantly associated with hypertension included age ≥50 years (AOR = 4.0 [1.2-12.7]), dyslipidemia (AOR = 18.6 [3.2-107.4]), hypercalcemia (AOR = 171.6 [32.5-905.9]), hyperkalemia (AOR = 27.6 [7.1-107.8]), and hypernatremia (AOR = 948.1 [160.0-5619.3]).Conclusion: This study reveals the high hospital prevalence of hypertension and the factors associated with it, emphasizing the necessity for targeted interventions for at-risk populations, especially the elderly and those with electrolyte imbalances.