Related Experiment Videos
[Self-reported hypertension: validation in a representative cross-sectional survey]
Maria Aurora Dropa Chrestani1, Iná da Silva dos Santos, Alícia M Matijasevich
1Universidade Federal de Pelotas, Rua Marechal Deodoro 1160, Pelotas, Brazil. machrestani@uol.com.br
Cadernos De Saude Publica
|November 26, 2009
Summary
Self-reported hypertension is a reliable indicator for population studies. This study found high accuracy in self-reports for hypertension prevalence, supporting its use in monitoring chronic non-communicable diseases.
Area of Science:
- Epidemiology
- Public Health
- Cardiovascular Disease Research
Background:
- Hypertension is a major risk factor for chronic non-communicable diseases.
- Accurate prevalence data is crucial for public health surveillance and intervention strategies.
- Validating self-reported data against clinical measures is essential for population health studies.
Purpose of the Study:
- To evaluate the accuracy of self-reported hypertension compared to measured blood pressure and drug use.
- To determine the sensitivity, specificity, and predictive values of self-reported hypertension.
- To assess the reliability of self-reporting for hypertension prevalence monitoring.
Main Methods:
- A population-based cross-sectional study was conducted in Pelotas, Southern Brazil, with 2,949 participants aged 20 years.
- Blood pressure was measured twice, with a gold standard defined by second visit measurements and/or anti-hypertensive drug use.
- Self-reported hypertension was assessed via a direct question about medical diagnosis of high blood pressure.
Main Results:
- Prevalence rates were 33.6% for self-reported and 29.5% for measured hypertension.
- Sensitivity was 84.3%, specificity 87.5%, positive predictive value 73.9%, and negative predictive value 93.0%.
- The findings indicate a high degree of agreement between self-reported and measured hypertension.
Conclusions:
- Self-reported hypertension demonstrates good validity as a method for monitoring disease prevalence.
- This method is reliable for assessing hypertension, a key risk factor for chronic non-communicable diseases.
- Self-reporting can be effectively utilized in large-scale epidemiological surveys and public health surveillance.
Related Concept Videos
01:30Hypertension III: Clinical Manifestations and Diagnostic Studies
Hypertension is asymptomatic and also referred to as the "silent killer" until it progresses to a severe stage or causes target organ disease. Patients may experience symptoms stemming from the strain on blood vessels and tissues in various organs or the heart's increased workload.Physical exams might show no abnormalities other than high blood pressure. Signs of vascular damage, when present, correspond to the organs supplied by the affected vessels, leading to target organ damage. For...
01:25Errors occurring during blood pressure monitoring
Blood pressure monitoring is a crucial clinical procedure in diagnosing and managing various cardiovascular conditions. Despite its significance, the accuracy of blood pressure measurements can be compromised by multiple factors, potentially leading to either falsely high or low readings. These inaccuracies are critical as they can significantly impact patient care. So, it is vital to understand these challenges deeply and adopt strategic approaches to minimize errors.
Several factors...
Several factors...
01:28Hypertension I: Introduction
Hypertension is a widespread, long-term medical condition where blood pressure in the arteries remains elevated. It is characterized by systolic blood pressure readings of 130 mm Hg or above or diastolic blood pressure (DBP) readings of 80 mm Hg or higher. Unmanaged hypertension poses significant health risks, making the distinction between primary (or essential) hypertension and secondary hypertension crucial, as their management and implications vary.Primary HypertensionPrimary hypertension,...
01:28Special considerations while measuring blood pressure
When assessing blood pressure (BP), healthcare professionals must consider various factors and potential unexpected outcomes to ensure accurate readings and provide proper patient care. Adhering to these guidelines is essential to achieving the most reliable results.
Monitoring Both Arms:
Monitoring BP in both arms during the initial assessment is advisable, as the systolic value may differ by five to ten mm Hg between arms. For subsequent BP assessments, use the arm with the higher reading.
Monitoring Both Arms:
Monitoring BP in both arms during the initial assessment is advisable, as the systolic value may differ by five to ten mm Hg between arms. For subsequent BP assessments, use the arm with the higher reading.
01:10Pre-Procedural Guidelines for Assessing Blood Pressure
Accurate blood pressure assessment is crucial for diagnosing and managing various health conditions. To ensure the reliability of these measurements, healthcare professionals must adhere to standardized pre-procedural guidelines. These guidelines enhance patient safety and improve the overall quality of healthcare. The following steps are essential for obtaining accurate and consistent blood pressure readings, from using the appropriate tools to ensuring effective communication with the patient.
01:23Assessment of blood pressure in brachial artery(two-step method)
Measuring blood pressure is a fundamental skill in healthcare that aids in diagnosing and monitoring hypertension and other cardiovascular conditions. An aneroid sphygmomanometer, commonly used in clinical settings, offers a manual and precise method for blood pressure measurement. The technique for using this instrument involves specific steps that must be carefully executed to ensure accuracy. The following detailed description outlines a two-step technique for assessing blood pressure using...