Dietary patterns associated with hypertension among stroke-free indigenous Africans: insights from the Stroke Investigative Research and Educational Network study.

BACKGROUND: The dietary factors associated with the high burden of hypertension among indigenous Africans remain poorly understood. We assessed the relationship between dietary patterns and hypertension among indigenous Africans. METHOD: In this study, 1550 participants with hypertension matched (for age: ±â€Š5 years, sex and ethnicity) with 1550 participants without hypertension were identified from the stroke-free population in the Stroke Investigative Research and Educational Network study in Ghana and Nigeria. Food consumption was assessed using a food frequency questionnaire, and dietary information was summarized using principal component analysis to identify seven dietary patterns. Conditional logistic regression was applied to compute the odds ratio (OR) and 95% confidence interval (CI) for the risk of hypertension by tertiles of dietary patterns adjusting for age, education, income, smoking, alcohol use, physical inactivity, family history of cardiovascular diseases, obesity and salt intake at a two-sided P less than 0.05. RESULTS: Multivariable-adjusted OR [95% confidence interval (CI)] for risk of hypertension by second and third tertiles [using the lowest (first) tertile as reference] of dietary patterns were 0.62 (0.48-0.80), 0.70 (0.54-0.90) for whole grains and fruit drinks; 0.87 (0.68-1.12), 0.83 (0.64-1.08) for fruits; 0.85 (0.65-1.10), 0.97 (0.75-1.26) for vegetables, legumes and potatoes; 0.78 (0.60-1.00), 0.84 (0.65-1.08) for fried foods and sweetened drinks; 1.13 (0.88-1.45), 0.80 (0.62-1.03) for poultry product and organ meat; 1.11 (0.86-1.43), 0.88 (0.68-1.14) for red meat; and 1.14 (0.88-1.48), 1.09 (0.84-1.43) for processed foods ( P  < 0.05). CONCLUSION: A higher adherence to dietary consumption of whole grains and fruits was inversely associated with low odds of hypertension in this population.

Non-cigarette tobacco use and stroke among West Africans: evidence from the SIREN study.

INTRODUCTION: Non-cigarette tobacco (NCT) represents a form of tobacco use with a misperceived significance in chronic disease events. Whether NCT use is sufficient to promote stroke events, especially among Africans, is yet to be understood. This study assessed the relationship between NCT use and stroke among indigenous Africans. METHODS: A total of 7,617 respondents (NCT users: 41 vs. non-NCT: 7576) from the Stroke Investigation Research and Educational Network study were included in the current analysis. NCT use was defined as self-reported use of smoked (cigars or piper) or smokeless (snuff or chewed) tobacco in the past year preceding stroke events. Stroke was defined based on clinical presentation and confirmed with a cranial CT/MRI. Multivariable-adjusted logistic regression was applied to estimate the odds ratio (OR) and 95% confidence interval (CI) for the relationship between NCT and stroke at p<0.05. RESULTS: Out of the 41 (0.54%) who reported NCT use, 27 (65.9%) reported using smokeless NCT. NCT users were older than non-smokers (62.8±15.7 vs 57.7±14.8 years). Overall, NCT use was associated with first-ever stroke (OR: 2.08; 95%CI: 1.02, 4.23) in the entire sample. Notably, smokeless NCT use was independently associated with higher odds of stroke (OR: 2.74; 95%CI: 1.15, 6.54), but smoked NCT use (OR: 0.16; 95%CI: 0.02, 1.63) presented a statistically insignificant association after adjusting for hypertension and other covariates. CONCLUSIONS: NCT use was associated with higher odds of stroke, and public health interventions targeting NCT use might be promising in reducing the burden of stroke among indigenous Africans. IMPLICATIONS: A detailed understanding of the relationship between NCT use and stroke will likely inform well-articulated policy guidance to promote evidence-based recommendations for public health prevention and management of stroke on the African continent.

Secondhand smoke exposure is independently associated with stroke among non-smoking adults in West Africa.

BACKGROUND: Stroke is a leading cause of disability and mortality worldwide, but little is known about the contribution of secondhand smoke exposure (SHSE) to stroke epidemiology among indigenous Africans. OBJECTIVE: To evaluate the association of SHSE with stroke among indigenous Africans. METHODS: We analyzed the relationship of SHSE with stroke among 2990 case-control pairs of adults who had never smoked (identified in the SIREN study) using conditional logistic regression at a two-sided P < 0.05. RESULTS: Multivariable-adjusted odds ratio and 95% confidence interval; 1.25 (1.04, 1.50; P = 0.02) revealed SHSE was positively associated with stroke independent of stroke subtypes. CONCLUSION: Culturally relevant primary prevention strategies targeted at SHSE might be promising in preventing stroke among Africans.

Exclusive Breastfeeding Intentions Among Adolescents In Urban Communities In Ibadan, Nigeria.

Purpose: During adolescence, a female child makes several decisions, and the choice to breastfeed in the near future is conceivably shaped. But in sub-Saharan Africa where teenage pregnancy and teenage motherhood is on the rise, there is a dearth of information on the intention of adolescents to exclusively breastfeed (EBF) in community settings. Therefore, this study assessed exclusive breastfeeding intentions, knowledge and attitude of adolescents in urban communities in Ibadan, Nigeria. Methods: A descriptive community-based cross-sectional study was carried out, selecting 271 respondents. Data were analysed with the aid of IBM SPSS version 21 at P ≤ .05. Results: Mean age of adolescents was 17.5 ± 1.3 years, and 96.3% would breastfeed their children later in future. However, only 37.6%, 22.5% and 50.2% had the intention to exclusively breastfeed, good knowledge score and positive attitude, respectively. There were significant relationships between respondents' age, educational attainment, parents' educational attainment, level of knowledge, attitude and intention. The coefficient of knowledge and attitude were significant predictors of good intention to practise EBF. Major predictors of good intention were good knowledge [OR = 36.5; 95% CI (9.2, 145.2)] and positive attitude toward EBF [OR = 9.7; 95% CI (3.6, 25.9)]. Conclusions: The EBF intention was influenced by multiple factors and should be considered in determining the effectiveness of interventions targeting this practice. Therefore, coherent EBF education interventions that commence from adolescence to promote the practice by adulthood are urgently needed to improve knowledge, attitude and intention about EBF rate and confer the cancer-risk reducing benefits.

Carotid and Vertebral Atherosclerosis in West African Stroke Patients: Findings from the Stroke Investigative Research and Education Network.

Background: We evaluated the characteristics of carotid and vertebral atherosclerosis in indigenous West Africans with stroke. Methodology: Of the 3778stroke patients recruited between 01/2014 and 08/2017, 1070 (28.3%) received carotid and vertebral artery evaluation with B-mode Ultrasound. Carotid and vertebral intima-media thickness (IMT) using multiple site technique were measured bilaterally and plaque frequency was determined. Descriptive and comparative analyses between stroke types and vessels were carried out. Results: There were 809 (75.6%) patients with ischemic stroke. The prevalence of intima-media thickening in the study population was 84.0% (898/1070) [95% CI: 81.7-86.1], being higher in the ischemic stroke (688/809, 85.0%) [95% CI: 82.4-87.3] than in the hemorrhagic stroke group (211/261, 80.8%) [95% CI: 75.6-85.2]. Overall prevalence of plaques which was 26.1% [95% CI: 23.5-28.8], was found also to be higher in ischemic than hemorrhagic stroke (29.8%[95% CI: 26.7-33.0] vs. 14.6% [95% CI: 10.8-19.4], p < 0.05). The mean IMT (carotids: 2.01+1.33 mm; vertebrals: 0.96+0.54mm, p<0.001) and prevalence of plaques (carotids: 8.8%; vertebrals: 1.7%,p<0.001) were higher in carotid than vertebral arteries. Age, hypertension, level of formal education, history of smoking, average monthly income, and family histories of hypertension and stroke were associated with intima-media thickening in the carotids (all p< 0.05) in the ischemic stroke patients while family history of hypertension, diabetes mellitus, and level of formal education were independently associated with intima-media thickening in the carotids (all p< 0.05) in the hemorrhagic stroke patients. No CVRF showed an independent association with the presence of plaque in the carotid and vertebral arteries both stroke types. Conclusions: One off our stroke patients in our cohort had atherosclerotic plaques, with ischemic patients being twice as likely to have this burden compared to hemorrhagic patients, and carotid atherosclerosis being five times as frequent as vertebral atherosclerosis.

Influence of age on links between major modifiable risk factors and stroke occurrence in West Africa.

Background The burden of stroke in Africa is high. Understanding how age associates with major modifiable stroke risk factors could inform tailored demographic stroke prevention strategies. Purpose To quantify the magnitude and direction of the effect sizes of key modifiable stroke risk factors according to three age groups: <50 years (young), 50-65 years (middle age) and > 65 years (elderly) in West Africa. Methods This was a case-control study involving 15 sites in Ghana and Nigeria. Cases included adults aged ≥18 years with CT/MRI scan-typed stroke. Controls were age-and gender-matched stroke-free adults. Detailed evaluations for vascular, lifestyle and psychosocial factors were performed. We estimated adjusted odds ratios (aOR) using conditional logistic regression and population attributable risk (PAR) with 95% Confidence Interval of vascular risk factors by age groups. Results Among 3553 stroke cases, 813 (22.9%) were young, 1441 (40.6%) were middle-aged and 1299 (36.6%) were elderly. Among the 5 co-shared risk factors, dyslipidemia with PAR and aOR (95%CI) of 62.20% (52.82-71.58) and 4.13 (2.64-6.46) was highest among the young age group; hypertension with PAR of 94.31% (91.82-96.80) and aOR of 28.93 (15.10-55.44) was highest among the middle-age group. Diabetes with PAR of 32.29%(27.52-37.05) and aOR of 3.49 (2.56-4.75); meat consumption with PAR of 42.34%(32.33-52.35) and aOR of 2.40 (1.76, 3.26); and non-consumption of green vegetables, PAR of 16.81%(12.02-21.60) and aOR of 2.23 (1.60-3.12) were highest among the elderly age group. However confidence intervals of risk estimates overlapped across age groups. Additionally, among the young age group cigarette smoking, psychosocial stress and cardiac disease were independently associated with stroke. Furthermore, education, stress, physical inactivity and salt intake were associated with stroke in the middle-age group while cardiac disease was associated with stroke in the elderly age group. Conclusion There is a differential influence of age on the associations of major risk factors with stroke in this West African cohort. Targeting modifiable factors predominant within an age group may be more effective as a stroke prevention strategy.

Predictors and prognoses of new onset post-stroke anxiety at one year in black Africans.

BACKGROUND: There is relatively limited information on the risk factors and outcome of new onset Poststroke Anxiety (PSA) in Low- and Middle-Income Countries. We estimated incidence, cumulative incidence, risk factors and outcome of new onset anxiety in the first year of stroke among African stroke survivors. METHODS: We analyzed the dataset of a completed clinical trial comprising patients enrolled to test an intervention designed to improve one-year blood pressure control among recent (≤ one month) stroke survivors in Nigeria. Anxiety was measured using the Hospital Anxiety and Depression Scale. Outcomes were assessed using the modified Rankin Scale (mRS), Community screening instrument for dementia (CSID) and Health Related Quality of Life in Stroke Patients (HRQOLISP-26). RESULTS: Among 322 stroke survivors who were free of anxiety at baseline, we found a one-year cumulative incidence of 34% (95% CI = 28.6-39.3). Rates were 36.2% (95% CI =29.6-42.7) for men and 29.2% (95% CI =19.9-38.3) for women. In multivariate Cox regression analyses, haemorrhagic stroke type was associated with higher risk of new onset PSA (Hazard Ratio=1.52, 95% CI =1.01-2.29). New onset PSA was independently associated with cognitive [(mean difference (MD) in CSID scores=1.1, 95% C.I=0.2, 1.9)] and motor decline (MD in mRS scores= -0.2, 95% C.I= -0.4, -0.02), as well as poorer quality of life overtime (MD in total HRQOLISP-26 scores=3.6, 95% C.I=1.0, 6.2). CONCLUSION: One in 3 stroke survivors in Nigeria had PSA at one year. Clinicians in SSA should pay special attention to survivors of haemorrhagic stroke as they are at higher risk of incident anxiety and therefore its consequences.

Unraveling the risk factors for spontaneous intracerebral hemorrhage among West Africans.

OBJECTIVE: To characterize risk factors for spontaneous intracerebral hemorrhage (sICH) occurrence and severity among West Africans. METHODS: The Stroke Investigative Research and Educational Network (SIREN) study is a multicenter case-control study involving 15 sites in Ghana and Nigeria. Patients were adults ≥18 years old with CT-confirmed sICH with age-, sex-, and ethnicity-matched stroke-free community controls. Standard instruments were used to assess vascular, lifestyle, and psychosocial factors. Factors associated with sICH and its severity were assessed using conditional logistic regression to estimate odds ratios (ORs) and population-attributable risks (PARs) with 95% confidence intervals (CIs) for factors. RESULTS: Of 2,944 adjudicated stroke cases, 854 were intracerebral hemorrhage (ICH). Mean age of patients with ICH was 54.7 ± 13.9 years, with a male preponderance (63.1%), and 77.3% were nonlobar. Etiologic subtypes of sICH included hypertension (80.9%), structural vascular anomalies (4.0%), cerebral amyloid angiopathy (0.7%), systemic illnesses (0.5%), medication-related (0.4%), and undetermined (13.7%). Eight factors independently associated with sICH occurrence by decreasing order of PAR with their adjusted OR (95% CI) were hypertension, 66.63 (20.78-213.72); dyslipidemia, 2.95 (1.84-4.74); meat consumption, 1.55 (1.01-2.38); family history of CVD, 2.22 (1.41-3.50); nonconsumption of green vegetables, 3.61 (2.07-6.31); diabetes mellitus, 2.11 (1.29-3.46); stress, 1.68 (1.03-2.77); and current tobacco use, 14.27 (2.09-97.47). Factors associated with severe sICH using an NIH Stroke Scale score >15 with adjusted OR (95% CI) were nonconsumption of leafy green vegetables, 2.03 (1.43-2.88); systolic blood pressure for each mm Hg rise, 1.01 (1.00-1.01); presence of midline shift, 1.54 (1.11-2.13); lobar ICH, 1.72 (1.16-2.55); and supratentorial bleeds, 2.17 (1.06-4.46). CONCLUSIONS: Population-level control of the dominant factors will substantially mitigate the burden of sICH in West Africa.

The effect of the "Follow in my Green Food Steps" programme on cooking behaviours for improved iron intake: a quasi-experimental randomized community study.

BACKGROUND: Nutritional iron deficiency is one of the leading factors for disease, disability and death. A quasi-experimental randomized community study in South-West Nigeria explored whether a branded behaviour change programme increased the use of green leafy vegetables (greens) and iron-fortified bouillon cubes in stews for improved iron intake. METHODS: A coinflip assigned the intervention to Ile-Ife (Intervention town). Osogbo (Control town) received no information. At baseline 602 mother-daughter pairs (daughters aged 12-18) were enrolled (Intervention: 300; Control: 302). A Food Frequency Questionnaire assessed the addition of cubes and greens to stews, the primary outcome. Secondary outcomes were the addition of cubes and greens to soups and changes in behavioural determinants measured using the Theory of Planned Behaviour. Structural Equation Modelling (SEM) evaluated the impact of the intervention on behavioural determinants and behaviour. RESULTS: The data of 527 pairs was used (Intervention: 240; Control: 287). The increase in greens added to stews was larger in the Intervention town compared to the Control town (MIntervention = 0.3 [SE = 0.03]; MControl = 0.0 [SE = 0.04], p < 0.001, r = 0.36). Change in iron-fortified cubes added to stews did not differ between towns (p = 0.07). The increase in cubes added to soups was larger in the Intervention town compared to the Control Town (MIntervention = 0.9 [SE = 0.2] vs MControl = 0.4 [SE = 0.1], p < .0001, r = 0.20). Unexpectedly, change in greens added to soups was larger in the Control town compared to the Intervention town (MIntervention = - 0.1 [SE = 0.1]; MControl = 0.5 [SE = 0.1], p = 0.003, r = 0.15). The intervention positively influenced awareness of anaemia and the determinants of behaviour in the Intervention town, with hardly any change in the Control town. Baseline SEMs could not be established, so no mediation analyses were done. Post-intervention SEMs highlighted the role of habit in cooking stews. CONCLUSIONS: The behaviour change programme increased the amount of green leafy vegetables added to stews and iron-fortified cubes added to soups. Future research should assess the long-term impact and the efficacy of the programme as it is scaled up and rolled out.

Perception and utilization of cervical cancer screening services among female nurses in University College Hospital, Ibadan, Nigeria.

BACKGROUND: Cervical Cancer (CC) is the second most common cancer among women with early detection and prompt treatment as best management options. Female nurses have crucial roles to play in promoting the utilization of Cervical Cancer Screening Services (CCSS), yet little information exist regarding their perception and utilization of these services. The CCSS related knowledge, perception and utilization among female nurses at the University College Hospital, (UCH) Ibadan, Nigeria were therefore determined. METHODS: A survey of 503 consenting nurses was done using a pretested self-administered questionnaire which included a 40-point knowledge scale and questions on perception of CC. Data were analyzed using descriptive statistics, Chi-square test, ANOVA and logistic regression. RESULTS: Respondents' mean age was 38.0 ± 8.6 years, mean year of experience was 12.5 ± 8.9 years and overall mean knowledge score was 22.8±4.1. Mean knowledge scores by cadre were Assistant Directors (26.7 ± 1.5), Chief Nursing Officers (23.4 ± 2.3) and Staff Nurses (21.7 ± 5.3) (p<0.05). Eighty-eight percent correctly perceived CC to be preventable and 82.0% believed that screening should be carried out as soon as sexual intercourse starts irrespective of age. Only 32.6% had ever used CCSS facility and main reasons for non-use included lack of time (50.8%), fear of result (13.9%) and not being sexually active (6.3%). Staff Nurses were four times less likely to utilize cervical screening services than the Assistant Directors of Nursing (OR 0.23, CI 0.117-0.442). CONCLUSION: Utilization of cervical cancer screening services among the female nurses was poor. Strategies that encourage utilization are hereby advocated.

Attitude towards mandatory pre-marital HIV testing among unmarried youths in Ibadan northwest local government area, Nigeria.

This study assessed the attitude of unmarried youths towards Mandatory Premarital HIV Testing (MPHT) in Ibadan Northwest Local Government Area. A three-stage sampling technique was used to select 571 unmarried youths from households. A validated questionnaire was used for the collection of the data. Descriptive, Chi-square statistics and logistics regression were used to analyze the data. Mean age of respondents was 20.6 +/- 2.6 years, 52.0% were males and 52.7% had completed their senior secondary education. Though 82.8% believed that MPHT could reduce the spread of HIV, 43.8% stated that it will increase the stigma associated with HIV infection. Attitude towards mandatory pre-marital HIV testing however was positive. Males were about two times more likely to have positive attitude towards mandatory pre-marital HIV testing (OR = 1.507, CI = 1.067-2.129). Positive attitude towards MPHT among study respondents offers a window of opportunity of undergoing HIV testing before marriage.

Prostate cancer awareness, knowledge, and screening practices among older men in Oyo State, Nigeria.

Prostate cancer is the leading cause of cancer among Nigerian men. This study assessed the knowledge, awareness, and screening practices among older men regarding prostate cancer in Oyo State, Nigeria. A cross-sectional study used a multi-stage sampling technique to select 561 adult males. A semi-structured questionnaire was used. Respondents' median age is 60.0 years. Prostate cancer awareness was high [449 (80.0%)]. The overall mean knowledge of prostate cancer causation, treatment, and prevention was 5.8 (± 3.0) out of a maximum of 16. Only 109 (19.4%) perceived themselves at risk of developing prostate cancer, but only 4.5% have ever been screened. Though knowledge and risk perception of prostate cancer were low, a majority of respondents (81.5%) were willing to be screened for the disease. Community-based prostate cancer educational interventions and provision of screening centers are needed for this group.

Knowledge dissemination and evaluation in a cervical cancer screening implementation program in Nigeria.

OBJECTIVES: Our goals were to train health professionals in Nigeria using the text, "Planning and Implementing Cervical Cancer Prevention and Control Programs: A Manual for Managers", and then evaluate the knowledge dissemination process using a pre- and post-test assessment. The manual was developed by the ACCP, WHO, IARC, PATH, Engender Health, JHPIEGO, and PAHO with funding from the Gates Foundation. It is an inclusive guide to implementation and maintenance of screen-and-treat cervical cancer prevention clinics and is ideally suited for programs operating in the developing world. METHODS: Training took place at a conference in Ibadan, Nigeria. Participants included teams of physicians, nurses, bioengineers, data managers, and administrators who met in joint and parallel sessions to "train the trainers". This meeting was designed to provide both training and equipment to personnel to be involved in the implementation of a cervical cancer control initiative in Nigeria. A 36 item pre-test was administered prior to a group study sessions. A slide presentation summarized salient points before the post-test was given. The results were entered into an MS Excel spreadsheet for descriptive statistics about (1) the participants, (2) the test, (3) an examination of profession, years of work experience, years of education, and gender as predictors of two outcomes (low pre-test score and large difference between pre- and post-tests) and (4) overall performance on the exam. RESULTS: There were 70 participants and trainers, of which 53 took the exam. Most of the examinees were physicians. Some participants did not fill out the post-test, leaving their tests inevaluable. A closer look at the test revealed eight questions that were confusing and nine that were too easy. All participant subgroups performed better on the post-test than the pre-test; the improvements were statistically significant. While profession impacted the results, profession was not statistically significant. Years of work experience, years of education, and gender did not affect test results. CONCLUSIONS: While the study suffers from a small sample size, a few ambiguous questions, and the need for pilot testing the instrument prior to the meeting, the report evaluates the manual very favorably. The authors showed a significant gain in knowledge. The manual gives "the big picture" and does so with clarity. The text and supplementary material outline the work that needs to proceed in an organized program, and the material was easily understandable in Nigeria. Future evaluations could benefit from more participants and varied learning structures.