Hypertension in the eastern province of Saudi Arabia: Results of a screening campaign

Objective: To estimate the prevalence of hypertension through a screening campaign in the Eastern Province of Saudi Arabia, and examine its association with lifestyle factors. Research Design and Methods: In 2004, all Saudi residents in the Eastern Province, aged 30 years and above were invited to participate in a screening campaign for the early detection of diabetes and hypertension. Blood pressure was recorded by trained nurses using a mercury sphygmomanometer, based on the recommendations of (JNC- VII). A positive screening test for hypertension was defined as systolic and/or diastolic blood pressure of ≥ 140 and 90 mm Hg, respectively. Subjects who had positive screening tests were asked to come on the following day for a confirmation of the reading. Hypertension was considered if there was a persistent reading of systolic and/or diastolic blood pressure of > 140 and 90 mmHg after confirmation, or when there was history of a previous diagnosis. Results: 21% of the sample was positive from previous history or screening. After confirmation, the prevalence of hypertension dropped to 15.6%, pre-hypertension was 3.7%, whereas the prevalence of undiagnosed hypertension was 2.8%. The prevalence rose with age. It was higher in women than in men of all age groups and in all sectors of the eastern province, although the mean systolic and diastolic BP was higher in men than women. It was higher with lower education, in widows and divorcees than others (P<0.0001). Conclusion: The yield of the screening for abnormal blood pressure was high. Systematic follow-up of subjects with abnormal screening results is vital

CONTROL OF HYPERTENSION IN EASTERN SAUDI ARABIA: RESULTS OF SCREENING CAMPAIGN

Objective: To assess the pattern of follow-up and level of hypertension control according to sociodemographic, and clinical risk factors in the participants of a screening campaign. Research Design and Methods. In 2004, all Saudi residents in the Eastern Province, aged 30 years and above, were invited to participate in a screening campaign for the early detection of diabetes and hypertension. A structured questionnaire was completed during a face-to-face interview. The presence of hypertension and the place of follow-up were recorded. Blood pressure was measured by trained nurses using a mercury sphygmomanometer, according to the recommendations of The Seventh Report of the Joint National Committee on Prevention, Detection, Evaluation, and Treatment of High Blood Pressure (JNC VII). Results: Thirteen point one percent of the participants had been previously diagnosed as having hypertension. In 34.3% of them, blood pressure was controlled, while 40.8% had combined uncontrolled SBP and DBP, 14.4% had isolated uncontrolled SBP, and 10.5% had isolated uncontrolled DBP. The blood pressure control was inversely associated with age. It was higher in women, singles, the educated, in those with BMI of less than 25 kg/m [2] , and in those with positive history of CVD (p<0.001). Conclusion: Co-morbidities relevant for hypertension are very prevalent, so aggressive BP control is mandatory

Performance of body mass index in predicting diabetes and hypertension in the Eastern Province of Saudi Arabia

<b>Background and Objectives</b> : Body mass index (BMI) is the most widely used measure to define obesity and predict its complications, such as diabetes and hypertension, but its accuracy and usefulness in Saudi subjects is unknown. This study aimed to assess the validity of standard BMI cut-point values in the Saudi population. <b> Subjects and Methods</b> : 197 681 adults participated in a cross-sectional study to detect diabetes and hypertension in the Saudi Eastern province in 2004/2005, with blood pressure, fasting blood sugar, height and weight measurements taken. Sensitivities, specificities, areas under the curves, predictive values, likelihood ratios, false positive, false negatives and total misclassification ratios were calculated for various BMI values determined from receiver operating characteristic (ROC) curves. The significance of the association between risk factors and BMI was assessed using regression analysis. <b> Results</b> : For the definition of overweight, ROC curve analysis suggested optimal BMI cut-offs of 28.50 to 29.50 in men and 30.50 to 31.50 in women, but the levels of sensitivity and specificity were too low to be of clinical value and the overall misclassification was unacceptably high across all the selected BMI values (>0.80). The relationship between BMI and the presence of diabetes and/or hypertension was not improved when a BMI of 25 was used. Using regression analyses, the odds ratios for hypertension and/or diabetes increased significantly from BMI values as low as 21-23 with no improvement in the diagnostic performance of BMI at these cutoffs. <b>Conclusion</b> : In Saudi population, there is an increased risk of diabetes and hypertension relative to BMI, starting at a BMI as low as 21 but overall there is no cutoff BMI level with high predictive value for the development of these chronic diseases, including the WHO definition of obesity at BMI of 30