Burden of undiagnosed hypertension and associated factors among adult populations in Wolaita Sodo Town, Wolaita Zone, Southern Ethiopia

BACKGROUND: Hypertension is defined as two or more measurements of systolic blood pressure equal to or greater than 130 mm Hg or diastolic blood pressure equal to or greater than 80 mm Hg. At the community level, symptoms of hypertension are not often detected in the early stages and it leads to many people being left undiagnosed with the disease. Undiagnosed hypertension increases the risk of complications like heart failure, kidney failure, myocardial infarction, stroke, and premature death. There is a paucity of studies concerning the burden of undiagnosed hypertension in Ethiopia including the study area. Therefore, this study aimed to assess the burden of undiagnosed hypertension among adults in Wolaita Sodo Town, Wolaita Zone, Southern Ethiopia,2021. METHODS AND MATERIALS: A community-based cross-sectional study involving 662 study participants was conducted at Wolaita Sodo Town from May 3 to July 3, 2021. A systematic random sampling technique was used to select the total number of participants. The data was entered using Epidata version 3, and analyzed by SPSS version 25 respectively. Binary logistic regression was used to check for a possible association. P-values < 0.05 and 95% CI were used on multi-variable analysis as the threshold for the significant statistical association. RESULTS: A total of 644 have participated in the study giving a response rate of 97.3%. The mean (± SD) age of the study participants was 39.18 (± 10.64) years. This finding showed that the burden of undiagnosed hypertension was 28.8% (95% CI: 24.7–33.2%). Body mass index with overweight (AOR = 2.83, 95% CI: 1.17–6.86), the presence of unrecognized diabetic mellitus (AOR = 1.31 95% CI: 1.11–2.15) habit of alcohol drinking (AOR = 2.91, 95% CI: 1.31–4.48), triglyceride (AOR = 3.48 95% CI: 1.22–9.95), age 31–43 years (AOR = 1.50, 95% CI: 1.02–2.01) were significantly associated factors with undiagnosed hypertension. CONCLUSIONS: The burden of undiagnosed hypertension findings was high. Body mass index with overweight, unrecognized diabetic mellitus the habit of alcohol drinking, triglyceride, and age 31–43 years were the factors with undiagnosed hypertension. These findings suggested that preventing risk factors and screening for hypertension at the community level should be encouraged for early detection, and monitoring of the burden of hypertension with ages more than 30 years old, high body mass index, and undiagnosed diabetic mellitus in the population. SUPPLEMENTARY INFORMATION: The online version contains supplementary material available at 10.1186/s12872-022-02733-3.