May Measurement Month 2017: an analysis of blood pressure screening in Angola-Sub-Saharan Africa

Prevalence of newly diagnosed hypertension and its associated factors in an opportunistic screening program in Addis Ababa, Ethiopia: an institution-based cross-sectional study

BACKGROUND

Hypertension is a recognized risk factor that underlies the epidemic of cardiovascular diseases. Guidelines, including those from the European Society of Hypertension, recommend opportunistic screening for hypertension in all adults. However, there have been no institution-based studies on the prevalence of hypertension and its associated factors with an opportunistic screening program in Ethiopia. Hence, this study aimed to assess the prevalence of newly diagnosed hypertension and its associated factors in an opportunistic screening program in Ethiopia.

METHODS

This was an institution-based cross-sectional study conducted on adult participants in an opportunistic hypertension screening program at Yekatit 12 Hospital Medical College, Addis Ababa, Ethiopia, from November 1, 2023, to February 1, 2024. Data were collected using a structured questionnaire, constructed as per the WHO STEPwise approach to non-communicable disease risk factor surveillance (STEPS). The data was analyzed using Statistical Package for Social Sciences (SPSS), version 26. Descriptive analysis was used to compile the sociodemographic and clinical characteristics of the participants, and logistic regression analyses were performed to determine the factors associated with hypertension.

RESULTS

A total of 301 adult participants were included in this study. The mean age of the participants was 47.6 years (standard deviation: 13.5), and 62.5% were males. The prevalence of newly diagnosed hypertension was 36.2% (95% confidence interval [CI]: 5.6, 66.8). Male sex (adjusted odds ratio (AOR) = 2.06, 95% (CI): 1.05, 4.04), being married (AOR = 4.8, 95% CI: 1.84, 2.77) or widowed (AOR = 5.14, 95% CI: 1.23, 1.46), less frequent intake of vegetables and/or fruits [< 3 days per week (AOR = 2.88, 95% CI: 1.12, 7.39), and 3 to 5 days per week (AOR = 2.22, 95% CI: 1.02, 4.86)], physical inactivity (AOR = 2.26, 95% CI: 1.21, 4.22), and body mass index (AOR = 1.17, 95% CI: 1.09, 1.26), had significant associations with hypertension.

CONCLUSION

This study demonstrated a high prevalence of newly diagnosed hypertension in an opportunistic screening program in Addis Ababa, Ethiopia. It also revealed that most of the factors significantly associated with hypertension were modifiable, underscoring the importance of promoting lifestyle changes. Most importantly, expanding institution-based opportunistic screening programs could be an effective approach to maximize the detection of hypertension and improve access to its treatment.

May Measurement Month 2019: an analysis of blood pressure screening results from Angola

Raised blood pressure (BP) is the biggest risk factor that contributes to the global burden of disease and mortality. May Measurement Month (MMM) is a global initiative aimed to improved awareness of BP and has been a temporary solution to the lack of screening programmes. An opportunistic cross-sectional survey of volunteers aged ≥18 was carried out in May 2019. Blood pressure measurement, the definition of hypertension, and statistical analysis followed the standard MMM protocol. In total, 7112 individuals were screened (mean age 41.3 years; 50.4% female; 99.5% black) in 6 of the 18 Angolan provinces. In total, 99.6% of screenees provided three BP readings with an average BP of the 2nd and 3rd readings of 126/81 mmHg. After imputation, 2745 (38.6%) had hypertension of whom 1389 (59.8%) were aware of their diagnosis and 50.6% were on antihypertensive medication. Of those 1389 treated participants, 41.2% were controlled (<140/90 mmHg) and of all hypertensive individuals, 20.8% were controlled. Also, 1356 individuals had untreated hypertension and 817 were inadequately treated. Angolan MMM19 follows on from the MMM17 (n = 17481) and MMM18 (n = 14433) studies, which were the largest BP screening campaigns undertaken in Angola. The 2019 results showed a high percentage of hypertensive individuals and almost 2200 adults had either untreated or inadequately treated hypertension, demonstrating that there is work to do but also that the Angolan MMM is being effective at raising awareness at least among these individuals.

Analysis of blood pressure and selected cardiovascular risk factors in the Democratic Republic of the Congo: the May Measurement Month 2018 results

Hypertension (HT) is the largest contributor to cardiovascular disease mortality and is characterized by high prevalence and low awareness, treatment, and control rates in sub-Saharan Africa. May Measurement Month (MMM) is an international campaign intended to increase awareness of high blood pressure (BP) among the population and advocate for its importance to the health authorities. This study aimed to increase awareness of raised BP in a country where its nationwide prevalence is yet unestablished. Investigators trained and tested how to use the campaign materials, collected participants' demographic data, lifestyle habits, and obtained from each one three BP measurements. Hypertension was defined as a BP ≥140/90 mmHg, or use of antihypertensive medication. Of the 18 719 screened (mean age 41 years; 61.4% men), 26.1% were found to be hypertensive of whom 46.3% were aware of their condition and 29.6% were taking antihypertensive medication. The control rate of HT was 43.0% in those on medication and 12.7% among all hypertensive respondents. Comorbidities found were-diabetes (3.3%), overweight/obesity (35.5%); and a previous stroke and a previous myocardial infarction were reported by 1.2% and 2.0%, respectively. Imputed age- and sex-standardized BP was higher in treated hypertensive individuals (135/85 mmHg) than those not treated (124/78 mmHg). Based on linear regression models adjusted for age and sex (and an interaction) and antihypertensive medication, stroke survivors, those who drank once or more per week (vs. never/rarely), and overweight/obese participants were associated with higher BP. MMM18 results in the Democratic Republic of the Congo corroborated the high prevalence of HT in Kinshasa screenees with low rates of treatment and control. Extension of the MMM campaign to other parts of the country is advisable.

May Measurement Month 2018: an analysis of blood pressure screening results from Angola

Elevated blood pressure (BP) is a growing burden worldwide with high prevalence in the world and with a huge impact on public health. May Measurement Month (MMM) is a global initiative aimed at raising awareness of high BP and to act as a temporary solution to the lack of screening programmes. An opportunistic cross-sectional survey of volunteers aged ≥18 was carried out in May 2018. Blood pressure measurement, the definition of hypertension and statistical analysis followed the standard MMM protocol. In Angola 14 433 individuals (mean age 38.6 years; 53.7% female; 99.9% black) in 6 of 18 provinces were screened. In total, 99.0% of screenees provided three BP readings with an average BP from 2nd and 3rd reading of 126/80 mmHg. After imputation, 4844 (33.6%) had hypertension of whom 54.2% were aware of their diagnosis and 46.3% were on antihypertensive medication. Of those medicated, 42.6% were controlled and of all hypertensive individuals, 19.7% were controlled. We screened 2603 individuals with untreated hypertension and 1285 with inadequately treated hypertension. Angolan MMM18 emerges as a continuation of the Angolan MMM17 study, the largest BP screening campaign undertaken in Angola, enabling us to compare the 2 years. This year’s results also showed a high percentage of hypertensive individuals and almost 3900 adults with untreated or inadequately treated hypertension, demonstrating that there is still a long way to go but also that the Angolan MMM is being effective at raising awareness at least among these individuals.