Profiling the novel plant-based meat alternative category: Consumer affective and sensory response in the context of perceived similarity to meat.

Plant-based meat alternatives (PBMAs) are increasingly popular and may contribute towards reduction of negative environmental impacts associated with the meat industry. Inferior sensory characteristics of PBMAs, compared to conventional meat products, remain a barrier for uptake of these products. This study aimed to profile a wide range of PBMAs for perceived similarity to meat, consumer liking, emotional response and sensory experience, and to determine consumer drivers of liking for this product category. Twenty-one PBMAs, spanning a broad range of product types (burger patties, sausages, meatball alternatives, chicken/beef pieces, bacon alternative, turkey roast alternative) and main protein ingredients (extruded plant proteins, tofu, or legumes/vegetables) representative of PBMAs available to Aotearoa New Zealand consumers, were tasted and evaluated by 140 Aotearoa New Zealand residents. Samples ranged widely in their perceived similarity to meat (median value range: 1.0-4.0 on a 5-point-scale) and overall liking ratings (mean ± SD, range: 35.1 ± 1.2--77.7 ± 17.4 on a 100-point hedonic scale). Overall liking ratings were driven mostly by liking for flavour, followed by texture, and less so by appearance. Sensorially, sample differentiation was mostly associated with variation in meat-related flavours and textures, or vegetable-related attributes. Notably meat flavour was the main driver of liking, and a very strong relationship (r = 0.92) was observed between perceived similarity to meat and overall sample liking ratings. Meat-like samples were also associated with positive emotional terms, whereas samples made from wholefoods were associated with negative emotional terms. Textural terms ('gluey/slimy', 'pasty/doughy') associated with wholefood products were also negative drivers for liking, and should be avoided in future PBMA products. In conclusion, the general population maintains a strong preference for PBMAs that are similar to meat, validating ongoing efforts to improve the meat-like properties of new and emerging products. PBMAs made from wholefoods require extensive product development to achieve consumer satisfaction across the category.

Validation of the Emergency Department-Paediatric Early Warning Score (ED-PEWS) for use in low- and middle-income countries: A multicentre observational study.

Early recognition of children at risk of serious illness is essential in preventing morbidity and mortality, particularly in low- and middle-income countries (LMICs). This study aimed to validate the Emergency Department-Paediatric Early Warning Score (ED-PEWS) for use in acute care settings in LMICs. This observational study is based on previously collected clinical data from consecutive children attending four diverse settings in LMICs. Inclusion criteria and study periods (2010-2021) varied. We simulated the ED-PEWS, consisting of patient age, consciousness, work of breathing, respiratory rate, oxygen saturation, heart rate, and capillary refill time, based on the first available parameters. Discrimination was assessed by the area under the curve (AUC), sensitivity and specificity (previously defined cut-offs < 6 and ≥ 15). The outcome measure was for each setting a composite marker of high urgency. 41,917 visits from Gambia rural, 501 visits from Gambia urban, 2,608 visits from Suriname, and 1,682 visits from Tanzania were included. The proportion of high urgency was variable (range 4.6% to 24.9%). Performance ranged from AUC 0.80 (95%CI 0.70-0.89) in Gambia urban to 0.62 (95%CI 0.55-0.67) in Tanzania. The low-urgency cut-off showed a high sensitivity in all settings ranging from 0.83 (95%CI 0.81-0.84) to 1.00 (95%CI 0.97-1.00). The high-urgency cut-off showed a specificity ranging from 0.71 (95%CI 0.66-0.75) to 0.97 (95%CI 0.97-0.97). The ED-PEWS has a moderate to good performance for the recognition of high urgency children in these LMIC settings. The performance appears to have potential in improving the identification of high urgency children in LMICs.

Linkage Case Management and Posthospitalization Outcomes in People With HIV: The Daraja Randomized Clinical Trial.

Importance: Despite the widespread availability of antiretroviral therapy (ART), people with HIV still experience high mortality after hospital admission. Objective: To determine whether a linkage case management intervention (named "Daraja" ["bridge" in Kiswahili]) that was designed to address barriers to HIV care engagement could improve posthospital outcomes. Design, Setting, and Participants: Single-blind, individually randomized clinical trial to evaluate the effectiveness of the Daraja intervention. The study was conducted in 20 hospitals in Northwestern Tanzania. Five hundred people with HIV who were either not treated (ART-naive) or had discontinued ART and were hospitalized for any reason were enrolled between March 2019 and February 2022. Participants were randomly assigned 1:1 to receive either the Daraja intervention or enhanced standard care and were followed up for 12 months through March 2023. Intervention: The Daraja intervention group (n = 250) received up to 5 sessions conducted by a social worker at the hospital, in the home, and in the HIV clinic over a 3-month period. The enhanced standard care group (n = 250) received predischarge HIV counseling and assistance in scheduling an HIV clinic appointment. Main Outcomes and Measures: The primary outcome was all-cause mortality at 12 months after enrollment. Secondary outcomes related to HIV clinic attendance, ART use, and viral load suppression were extracted from HIV medical records. Antiretroviral therapy adherence was self-reported and pharmacy records confirmed perfect adherence. Results: The mean age was 37 (SD, 12) years, 76.8% were female, 35.0% had CD4 cell counts of less than 100/µL, and 80.4% were ART-naive. Intervention fidelity and uptake were high. A total of 85 participants (17.0%) died (43 in the intervention group; 42 in the enhanced standard care group); mortality did not differ by trial group (17.2% with intervention vs 16.8% with standard care; hazard ratio [HR], 1.01; 95% CI, 0.66-1.55; P = .96). The intervention, compared with enhanced standard care, reduced time to HIV clinic linkage (HR, 1.50; 95% CI, 1.24-1.82; P < .001) and ART initiation (HR, 1.56; 95% CI, 1.28-1.89; P < .001). Intervention participants also achieved higher rates of HIV clinic retention (87.4% vs 76.3%; P = .005), ART adherence (81.1% vs 67.6%; P = .002), and HIV viral load suppression (78.6% vs 67.1%; P = .01) at 12 months. The mean cost of the Daraja intervention was about US $22 per participant including startup costs. Conclusions and Relevance: Among hospitalized people with HIV, a linkage case management intervention did not reduce 12-month mortality outcomes. These findings may help inform decisions about the potential role of linkage case management among hospitalized people with HIV. Trial Registration: ClinicalTrials.gov Identifier: NCT03858998.

Who is most vulnerable? Factors associated with presenting to antenatal care without a male partner in Northern Tanzania.

OBJECTIVE: Male engagement in pregnancy care can be beneficial for maternal and child health outcomes. In Tanzania, pregnant women are strongly encouraged to present to their first antenatal care (ANC) appointment with a male partner, where they jointly test for HIV. For some, this presents a barrier to ANC attendance. The objectives of this study were to identify factors associated with presenting to ANC with a male partner using a cross-sectional design and to assess whether women presenting without partners had significantly delayed presentation. METHODS: Pregnant women (n = 1007) attending a first ANC appointment in Moshi, Tanzania were surveyed. Questions captured sociodemographic characteristics and measures of psychosocial constructs. RESULTS: Just over half (54%) of women presented to care with a male partner. Women were more likely to present with a male partner if they were younger than 25 years old, married, Muslim, attending ANC for their first pregnancy, and testing for HIV for the first time. Women presenting to ANC with a male partner were significantly more likely to attend ANC earlier in their pregnancy than those presenting without male partners. CONCLUSION: Policy change allowing women to present to care with other supportive family members could promote earlier presentation to first ANC. Unmarried women may be at a disadvantage in presenting to ANC when policies mandate attendance with a male partner. Male partners of multiparous women should be encouraged to provide pregnancy support even after first pregnancies, and a wholistic emphasis (beyond HIV testing) on first ANC could encourage male engagement beyond the initial appointment.

Understanding male involvement in antenatal care in the Kilimanjaro region of Tanzania: Barriers, facilitators, and opportunities for engagement.

BACKGROUND: Male engagement in antenatal care (ANC) has been recommended by the World Health Organization to improve maternal and newborn health outcomes, but implementation challenges remain. This study explored barriers, facilitators, and opportunities to improve male attendance and engagement in ANC. METHODS: In-depth interviews were conducted individually with pregnant women and male partners attending a first ANC visit at two public health facilities in Moshi, Tanzania. Interviews examined factors influencing male ANC attendance and male experiences during the clinic visit. Interviews were recorded, transcribed verbatim, and translated from Swahili into English. Transcripts were coded thematically in NVivo. MAIN FINDINGS: Constructions of masculinity both positively and negatively influenced male involvement in ANC. Individual-level barriers included a fear of HIV testing, perceptions of pregnancy as the woman's responsibility, and discomfort with ANC as a predominantly female space. Structural barriers included inability to take time off from work and long clinic wait times. The primary facilitator to male involvement was the preferential care given in the ANC clinic to women who present with a male partner. Additionally, some men desired to learn about their family's health status and felt that attending ANC was a sign of respect and love for their partner. CONCLUSIONS: Opportunities exist to improve male involvement in ANC, namely training providers to engage men beyond HIV testing and counseling. Peer programs that promote men's engagement in pregnancy could prove useful to reduce apprehension around HIV testing and dispel conceptions of ANC as only a women's healthcare space.

Hypertension among adolescents in sub-Saharan Africa: a systematic review.

Introduction: Hypertension (HTN) among adolescents is common in high-income countries, and leads to increased premature cardiovascular diseases (CVD). In sub-Saharan Africa (SSA), the prevalence of HTN among adolescents, associated risk factors and CVD complications are not well-described. Such data is needed for planning public health programs to prevent premature CVD in SSA. Methods: We systematically searched 5 databases (MEDLINE, Embase, Google Scholar, Web of Science, and African Index Medicus) from their establishment to December 2021. Key search terms were: adolescent, arterial hypertension, and names of the 48 countries in SSA. We used Covidence® to manage the search results. The review was registered in the Open Science Framework (OSF) https://osf.io/p5sbt/. Results: We identified 4,008 articles out of which we screened 3,088 abstracts, and reviewed 583 full-text articles. We finally included 92 articles that were published between 1968 to December 2021. The majority were cross-sectional studies (80%) and conducted in school settings (78%). The risk of bias was low for 59 studies (64.1%), moderate for 29 studies (31.5%), and high for 4 studies (4.3%). Overall, the prevalence of HTN varied widely from 0.18% to 34.0% with a median (IQR) of 5.5% (3.1%, 11.1%). It was relatively higher in studies using automated blood pressure (BP) devices, and in studies defining HTN using thresholds based on percentile BP distribution for one's height, age, and sex. In addition, the prevalence of HTN was significantly higher in studies from Southern Africa region of SSA and positively correlated with the year of publication. Across studies, traditional risk factors such as age, sex, body mass index, and physical inactivity, were commonly found to be associated with HTN. In contrast, non-traditional risk factors related to poverty and tropical diseases were rarely assessed. Only three studies investigated the CVD complications related to HTN in the study population. Conclusion: The prevalence of HTN among adolescents in SSA is high indicating that this is a major health problem. Data on non-traditional risk factors and complications are scarce. Longitudinal studies are needed to clearly define the rates, causes, and complications of HTN. Systematic Review Registration: https://osf.io/p5sbt/, identifier (10.17605/OSF.IO/P5SBT).

Photoelectrocatalytic Surfactant Pollutant Degradation and Simultaneous Green Hydrogen Generation.

For the first time, we demonstrate a photoelectrocatalysis technique for simultaneous surfactant pollutant degradation and green hydrogen generation using mesoporous WO3/BiVO4 photoanode under simulated sunlight irradiation. The materials properties such as morphology, crystallite structure, chemical environment, optical absorbance, and bandgap energy of the WO3/BiVO4 films are examined and discussed. We have tested the anionic type (sodium 2-naphthalenesulfonate (S2NS)) and cationic type surfactants (benzyl alkyl dimethylammonium compounds (BAC-C12)) as model pollutants. A complete removal of S2NS and BAC-C12 surfactants at 60 and 90 min, respectively, by applying 1.75 V applied potential vs RHE to the circuit, under 1 sun was achieved. An interesting competitive phenomenon for photohole utilization was observed between surfactants and adsorbed water. This led to the formation of H2O2 from water alongside surfactant degradation (anode) and hydrogen evolution (cathode). No byproducts were observed after the direct photohole mediated degradation of surfactants, implying its advantage over other AOPs and biological processes. In the cathode compartment, 82.51 µmol/cm2 and 71.81 µmol/cm2 of hydrogen gas were generated during the BAC-C12 and S2NS surfactant degradation process, respectively, at 1.75 V RHE applied potential.

Peer Counselor Intervention for Reducing Mortality and/or Hospitalization in Adults With Hypertensive Urgency in Tanzania: A Pilot Study.

BACKGROUND: Worldwide, people with hypertensive urgency experience high rates of hospitalization and death due to medication non-adherence. Interventions to improve medication adherence and health outcomes after hypertensive urgency are urgently needed. METHODS: This prospective cohort assessed the effect of a peer counselor intervention-named Rafiki mwenye msaada-on the 1-year incidence of hospitalization and/or death among adults with hypertensive urgency in Mwanza, Tanzania. We enrolled 50 patients who presented with hypertensive urgency to 2 hospitals in Mwanza, Tanzania. All 50 patients received a Rafiki mwenye msaada an individual-level, time-limited case management intervention. Rafiki mwenye msaada aims to empower adult patients with hypertensive urgency to manage their high blood pressure. It consists of 5 sessions delivered over 3 months by a peer counselor. Outcomes were compared to historical controls. RESULTS: Of the 50 patients (median age, 61 years), 34 (68%) were female, and 19 (38%) were overweight. In comparison to the historical controls, the intervention cohort had a significantly lower proportion of patients with a secondary level of education (22% vs. 35%) and health insurance (40% vs. 87%). Nonetheless, the 1-year cumulative incidence of hospitalization and/or death was 18% in the intervention cohort vs. 35% in the control cohort (adjusted Hazard Ratio, 0.48, 95% CI 0.24-0.97; P = 0.041). Compared to historical controls, intervention participants maintained higher rates of medication use and clinic attendance at both 3- and 6-months but not at 12 months. Of intervention participants who survived and remained in follow-up, >90% reported good medication adherence at all follow-up time points. CONCLUSION: Our findings support the hypothesis that a peer counselor intervention may improve health outcomes among adults living with hypertensive urgency. A randomized clinical trial is needed to evaluate the intervention's effectiveness.

Use of QuEChERS as a manual and automated high-throughput protocol for investigating environmental matrices.

Environmental pollution has strong links to adverse human health outcomes with risks of pollution through production, use, ineffective wastewater (WW) remediation, and/or leachate from landfill. 'Fit-for-purpose' monitoring approaches are critical for better pollution control and mitigation of harm, with current sample preparation methods for complex environmental matrices typically time-consuming and labour intensive, unsuitable for high-throughput screening. This study has shown that a modified 'Quick Easy Cheap Effective Rugged and Safe' (QuEChERS) sample preparation is a viable alternative for selected environmental matrices required for pollution monitoring (e.g. WW effluent, treated sludge cake and homogenised biota tissue). As a manual approach, reduced extraction times (hours to ∼20 min/sample) with largely reproducible (albeit lower) recoveries of a range of pharmaceuticals and biocidal surfactants have been reported. Its application has shown clear differentiation of matrices via chemometrics, and the measurement of pollutants of interest to the UK WW industry at concentrations significantly above suggested instrument detection limits (IDL) for sludge, indicating insufficient removal and/or bioaccumulation during WW treatment. Furthermore, new pollutant candidates of emerging concern were identified - these included detergents, polymers and pharmaceuticals, with quaternary ammonium compound (QAC) biocides observed at 2.3-70.4 mg/kg, and above levels associated with priority substances for environmental quality regulation (EQSD). Finally, the QuEChERS protocol was adapted to function as a fully automated workflow, further reducing the resource to complete both the preparation and analysis to <40 min. This operated with improved recovery for soil and biota (>62%), and when applied to a largely un-investigated clay matrix, acceptable recovery (88.0-131.1%) and precision (≤10.3% RSD) for the tested pharmaceuticals and biocides was maintained. Therefore, this preliminary study has shown the successful application of a high-throughput QuEChERS protocol across a range of environmental solids for potential deployment in a regulated laboratory.

Prevalence and predictors of depression among women attending antenatal care in Moshi, Tanzania: a cross-sectional study.

INTRODUCTION: Antenatal depression in low-and middle-income countries is under-diagnosed and leads to poorer outcomes in the pregnancy and postpartum periods. The aim of this study was to quantify depressive symptoms among pregnant women in Moshi, Tanzania, and identify factors associated with probable depression. METHODS: Between March and December 2019, we enrolled 1039 pregnant women attending their first antenatal care appointment at two government health facilities to complete an audio computer-assisted self-interview. Depressive symptoms were measured with the Edinburgh Postnatal Depression Scale (EPDS), with a score > 13 indicating probable depression. A log-binomial regression model was used to identify factors associated with probable antenatal depression. RESULTS: A total of 11.5% (119/1033) met criteria for probable depression. Depression was more common among women who were not married (16.5% vs. 7.9%, PrR = 1.5, 95% CI 1.0, 2.1) and women who reported a lifetime history of violence (22.6% vs. 5.3%, PrR = 3.3, 95% CI 2.2, 5.0). Depression was less common among women who reported more partner-specific support (PrR = 0.92, 95% CI 0.87, 0.96). CONCLUSIONS: Screening pregnant women for depressive symptoms is an essential component of evidence-based maternity care and should be accompanied by appropriate support and resources. Women who are not married, have limited support from a partner, or have experienced violence are especially vulnerable to depressive symptomatology during pregnancy.

Screening and enrollment of underrepresented ethnocultural and educational populations in the Alzheimer's Disease Neuroimaging Initiative (ADNI).

INTRODUCTION: An analysis of the ethnocultural and socioeconomic composition of Alzheimer's Disease Neuroimaging Initiative (ADNI) participants is needed to assess the generalizability of ADNI data to diverse populations. METHODS: ADNI data collected between October 2004 and November 2020 were used to determine ethnocultural and educational composition of the sample and differences in the following metrics: screening, screen fails, enrollment, biomarkers. RESULTS: Of 3739 screened individuals, 11% identified as being from ethnoculturally underrepresented populations (e.g., Black, Latinx) and 16% had <12 years of education. Of 2286 enrolled participants, 11% identified as ethnoculturally underrepresented individuals and 15% had <12 years of education. This participation is considerably lower than US Census data for adults 60+ (ethnoculturally underrepresented populations: 25%; <12 years of education: 4%). Individuals with <12 years of education failed screening at a higher rate. DISCUSSION: Our findings suggest that ADNI results may not be entirely generalizable to ethnoculturally diverse and low education populations.

Atrial fibrillation and mortality in outpatients with heart failure in Tanzania: a prospective cohort study.

OBJECTIVE: In recent years, the prevalence and mortality of heart failure (HF) and other associated cardiovascular diseases have doubled in sub-Saharan Africa (SSA). Studies in high-income countries indicate that HF with concurrent atrial fibrillation (AF) is linked to increased mortality. Our objective was to determine the incidence and clinical outcomes of AF among patients with HF in SSA. DESIGN: A prospective cohort study using data collected between October 2018 and May 2020. SETTING: Outpatient clinic at a tertiary hospital in Mwanza, Tanzania. PARTICIPANTS: 303 adult participants (aged ≥18 years) with HF as defined by the European Society of Cardiology guidelines (2016) and 100 adults with HF as defined by clinical criteria alone were enrolled into the study. Patients with comorbid medical condition that had prognosis of <3 months (ie, advance solid tumours, advance haematological malignancies) were excluded. METHODS: Participants were screened for AF, and their medical history, physical examinations and sociodemographic information were obtained. Multivariable logistic regression models were used to examine factors associated with AF incidence. Cox regression models were used to analyse 3-month mortality and its associated risk factors. RESULTS: We enrolled 403 participants with HF (mean age 60±19 years, 234 (58%) female). The AF prevalence was 17%. In multivariable models, factors associated with AF were low income, alcohol consumption and longer duration of HF. At the end of the 3-month follow-up, 120 out of 403 (30%) participants died, including 44% (31/70) of those with AF. Higher heart rate on ECG, more severe New York Heart Association HF class, rural residence and anaemia were significantly correlated with mortality. CONCLUSION: AF is common, underdiagnosed and is associated with significant mortality among outpatients with HF in Tanzania (HR 1.749, 95% CI 1.162 to 2.633, p=0.007). Our findings additionally identify tachycardia (>110 bpm, HR 1.879, 95% CI 1.508 to 2.340, p<0.001) as an easily measurable, high-impact physical examination finding for adverse outcomes in patients with HF.

A social worker intervention to reduce post-hospital mortality in HIV-infected adults in Tanzania (Daraja): Study protocol for a randomized controlled trial.

BACKGROUND: In sub-Saharan Africa (SSA), hospitalized HIV-infected patients who are discharged home have been shown to experience extremely high mortality rate. Daraja is an individual-level, time-limited, five-session case management intervention aiming to link hospitalized HIV-infected patients to outpatient HIV care upon discharge. METHODS: A randomized control trial will aim at evaluating the efficacy of Daraja intervention on reducing mortality in hospitalized HIV-infected patients upon discharge from hospital. The study will recruit 500 hospitalized HIV-infected adults who are ART naïve or defaulted for >7 days from hospitals in Mwanza region, Tanzania. Participants will be enrolled during hospitalization and a baseline assessment will be done. Participants will be randomized to receive either the standard of care HIV linkage, or the Daraja intervention a day before the expected hospital discharge date. The Daraja intervention includes five sessions delivered by a social worker over a 3-month period. All participants will complete follow-up assessment at month 12 and 24. Measures will include 1-year survival, HIV care continuum outcomes (linkage, retention, antiretroviral adherence, and viral suppression), and cost (incremental cost of the intervention and cost per life saved). Quality assurance data will be collected, and the feasibility and acceptability of the intervention will be described. Statistical analysis will assess the effectiveness of the Daraja intervention on improving survival and HIV care continuum outcomes. DISCUSSION: Hospitalized HIV-infected patients who are being discharged home have higher mortality due to poor linkage to primary HIV care. The Daraja intervention has the potential to address barriers that prevent successful transition from hospital to primary HIV care. TRIAL REGISTRATION: ClinicalTrials.gov, NCT03858998. Registered on 01 March 2019.

Understanding barriers and facilitators to clinic attendance and medication adherence among adults with hypertensive urgency in Tanzania.

Hypertensive urgency is a major risk factor for cardiovascular events and premature deaths. Lack of medication adherence is associated with poor health outcomes among patients with hypertensive urgency in resource-limited settings. To inform the development of tailored interventions to improve health outcomes in this population, this study aimed at understanding facilitators and barriers to clinic attendance and medication adherence among Tanzanian adults with hypertensive urgency. We conducted in-depth interviews with 38 purposively selected participants from three groups: 1) patients with hypertension attending hypertension clinic, 2) patients with hypertension not attending hypertension clinic, and 3) clinic health workers. Interviews were conducted using a semi-structured guide which included open-ended questions with prompts to encourage detailed responses. In their narrative, patients and healthcare workers discussed 21 types of barriers/facilitators to clinic attendance and medication adherence: 12 common to both behaviors (traditional medicine, knowledge and awareness, stigma, social support, insurance, reminder cues, symptoms, self-efficacy, peer support, specialized care, social services, religious beliefs); 6 distinct to clinic attendance (transport, clinic location, appointment, patient-provider interaction, service fragmentation, quality of care); and 3 distinct to medication adherence (drug stock, side effects, medicine beliefs). The majority of identified barriers/facilitators overlap between clinic attendance and medication adherence. The identified barriers may be surmountable using tailored supportive intervention approaches, such as peer counselors, to help patients overcome social challenges of clinic attendance and medication adherence.

An opportunity for primary prevention research in psychotic disorders.

An opportunity has opened for research into primary prevention of psychotic disorders, based on progress in endophenotypes, genetics, and genomics. Primary prevention requires reliable prediction of susceptibility before any symptoms are present. We studied a battery of measures where published data supports abnormalities of these measurements prior to appearance of initial psychosis symptoms. These neurobiological and behavioral measurements included cognition, eye movement tracking, Event Related Potentials, and polygenic risk scores. They generated an acceptably precise separation of healthy controls from outpatients with a psychotic disorder. METHODS: The Bipolar and Schizophrenia Network on Intermediate Phenotypes (B-SNIP) measured this battery in an ancestry-diverse series of consecutively recruited adult outpatients with a psychotic disorder and healthy controls. Participants include all genders, 16 to 50 years of age, 261 with psychotic disorders (Schizophrenia (SZ) 109, Bipolar with psychosis (BPP) 92, Schizoaffective disorder (SAD) 60), 110 healthy controls. Logistic Regression, and an extension of the Linear Mixed Model to include analysis of pairwise interactions between measures (Environmental kernel Relationship Matrices (ERM)) with multiple iterations, were performed to predict case-control status. Each regression analysis was validated with four-fold cross-validation. RESULTS AND CONCLUSIONS: Sensitivity, specificity, and Area Under the Curve of Receiver Operating Characteristic of 85%, 62%, and 86%, respectively, were obtained for both analytic methods. These prediction metrics demonstrate a promising diagnostic distinction based on premorbid risk variables. There were also statistically significant pairwise interactions between measures in the ERM model. The strong prediction metrics of both types of analytic model provide proof-of-principle for biologically-based laboratory tests as a first step toward primary prevention studies. Prospective studies of adolescents at elevated risk, vs. healthy adolescent controls, would be a next step toward development of primary prevention strategies.

Male engagement guidelines in antenatal care: unintended consequences for pregnant women in Tanzania.

BACKGROUND: The meaningful engagement of male partners in antenatal care (ANC) can positively impact maternal and newborn health outcomes. The Tanzania National Plan for the Elimination of Mother to Child Transmission of HIV recommends male partners attend the first ANC appointment as a strategy for HIV prevention and treatment. This recommendation seeks to increase uptake of HIV and reproductive healthcare services, but unintended consequences of these guidelines may negatively impact women's ANC experiences. This study qualitatively examined the impact of policy promoting male engagement on women's ANC experiences. METHODS: The study was conducted in two urban clinics in Kilimanjaro Region, Tanzania. In-depth interviews were conducted with 19 participants (13 women and 6 male partners) attending a first ANC appointment. A semi-structured guide was developed, applying Kabeer's Social Relations Approach. Data were analyzed using applied thematic analysis, combining memo writing, coding, synthesis, and comparison of themes. RESULTS: Male attendance impacted the timing of women's presentation to ANC and experience during the first ANC visit. Women whose partners could not attend delayed their presentation to first ANC due to fears of being interrogated or denied care because of their partner absence. Women presenting with partners were given preferential treatment by clinic staff, and women without partners felt discriminated against. Women perceived that the clinic prioritized men's HIV testing over involvement in pregnancy care. CONCLUSIONS: Study findings indicate the need to better assess and understand the unintended impact of policies promoting male partner attendance at ANC. Although male engagement can benefit the health outcomes of mothers and newborn children, our findings demonstrate the need for improved methods of engaging men in ANC. ANC clinics should identify ways to make clinic settings more male friendly, utilize male attendance as an opportunity to educate and engage men in pregnancy and newborn care. At the same time, clinic policies should be cognizant to not discriminate against women presenting without a partner.

Development of a Mobile Application Platform for Self-Management of Obesity Using Artificial Intelligence Techniques.

Obesity is a major global health challenge and a risk factor for the leading causes of death, including heart disease, stroke, diabetes, and several types of cancer. Attempts to manage and regulate obesity have led to the implementation of various dietary regulatory initiatives to provide information on the calorie contents of meals. Although knowledge of the calorie content is useful for meal planning, it is not sufficient as other factors, including health status (diabetes, hypertension, etc.) and level of physical activity, are essential in the decision process for obesity management. In this work, we present an artificial intelligence- (AI-) based application that is driven by a genetic algorithm (GA) as a potential tool for tracking a user's energy balance and predicting possible calorie intake required to meet daily calorie needs for obesity management. The algorithm takes the users' input information on desired foods which are selected from a database and extracted records of users on cholesterol level, diabetes status, and level of physical activity, to predict possible meals required to meet the users need. The micro- and macronutrients of food content are used for the computation and prediction of the potential foods required to meet the daily calorie needs. The functionality and performance of the model were tested using a sample of 30 volunteers from the University of Ghana. Results revealed that the model was able to predict both glycemic and non-glycemic foods based on the condition of the user as well as the macro- and micronutrients requirements. Moreover, the system is able to adequately track the progress of the user's weight loss over time, daily nutritional needs, daily calorie intake, and predictions of meals that must be taken to avoid compromising their health. The proposed system can serve as a useful resource for individuals, dieticians, and other health management personnel for managing obesity, patients, and for training students in fields of dietetics and consumer science.

High-harmonic generation in metallic titanium nitride.

High-harmonic generation is a cornerstone of nonlinear optics. It has been demonstrated in dielectrics, semiconductors, semi-metals, plasmas, and gases, but, until now, not in metals. Here we report high harmonics of 800-nm-wavelength light irradiating metallic titanium nitride film. Titanium nitride is a refractory metal known for its high melting temperature and large laser damage threshold. We show that it can withstand few-cycle light pulses with peak intensities as high as 13 TW/cm2, enabling high-harmonics generation up to photon energies of 11 eV. We measure the emitted vacuum ultraviolet radiation as a function of the crystal orientation with respect to the laser polarization and show that it is consistent with the anisotropic conduction band structure of titanium nitride. The generation of high harmonics from metals opens a link between solid and plasma harmonics. In addition, titanium nitride is a promising material for refractory plasmonic devices and could enable compact vacuum ultraviolet frequency combs.