Self-Reported Hypertension and Associated Factors Among Adults in Butambala District, Central Uganda: A Community-Based Prevalence Study.

Background: The prevalence of hypertension (HTN) differs among regions and income groups, showing a substantial increase in low- and middle-income countries. The development of hypertension is modulated by modifiable lifestyle factors, and uncontrolled hypertension poses a risk for the onset of cardiovascular diseases. Objective: To determine the community-level point-prevalence and factors associated with self-reported HTN among adults in Butambala district, central Uganda. Methods: A community-based cross-sectional study was conducted among adults aged ≥18 years in Budde subcounty, central Uganda. Data on sociodemographic characteristics and behavior were collected using a semistructured questionnaire. Self-reported HTN was assessed using a single question: "Do you have high blood pressure?" Bivariate and multivariate logistic regression analyses were performed to identify predictors of self-reported HTN. Results: A total of 565 participants (53.5% female) with a median age of 38 years (IQR: 26-52) were included in the study. The prevalence of self-reported hypertension was 18.9%. Factors independently associated with HTN were age 60 years or older (aOR: 2.9, 95% CI: 1.64-5.23, p<0.001), female sex (aOR: 3.3, 95% CI: 2.3-6.3, p<0.001), being widowed (aOR: 10.4, 95% CI: 1.25-87.14, p=0.03), secondary (aOR: 0.4, 95% CI: 0.20-0.85, p=0.016) and tertiary (aOR: 0.2, 95% CI: 0.09-0.64, p=0.005) education, unemployment (aOR: 3.0, 95% CI: 1.11-7.96, p=0.03), tobacco use (aOR: 2.9, 95% CI: 1.83-4.53, p<0.001), having had at least one blood pressure measurement during antenatal visit (aOR: 4.7, 95% CI: 1.97-11.33, p<0.001) or medical checkup (aOR: 10.7, 95% CI: 6.06-18. Conclusion: We observed a high prevalence of self-reported HTN affecting approximately one in five participants. More efforts are required to enhance routine screening, health education, and accessibility to HTN services in rural areas, with a particular emphasis on implementing HTN prevention and control strategies to effectively reduce the prevalence of HTN.

Flexure-tuned membrane-at-the-edge optomechanical system.

We introduce a passively-aligned, flexure-tuned cavity optomechanical system in which a membrane is positioned microns from one end mirror of a Fabry-Perot optical cavity. By displacing the membrane through gentle flexure of its silicon supporting frame (i.e., to ∼80 m radius of curvature (ROC)), we gain access to the full range of available optomechanical couplings, finding also that the optical spectrum exhibits none of the abrupt discontinuities normally found in "membrane-in-the-middle" (MIM) systems. More aggressive flexure (3 m ROC) enables >15 µm membrane travel, milliradian tilt tuning, and a wavelength-scale (1.64 ± 0.78 µm) membrane-mirror separation. We also provide a complete set of analytical expressions for this system's leading-order dispersive and dissipative optomechanical couplings. Notably, this system can potentially generate orders of magnitude larger linear dissipative or quadratic dispersive strong coupling parameters than is possible with a MIM system. Additionally, it can generate the same purely quadratic dispersive coupling as a MIM system, but with significantly suppressed linear dissipative back-action (and force noise).