Maternal anaemia remains a pressing global health challenge, with a notable burden in low- and middle-income countries. Existing studies in sub-Saharan Africa have largely relied on average associations, thereby concealing key variation among women and failing to account for heterogeneity.

To assess the association between completing at least eight antenatal care (ANC) contacts and maternal anaemia in Ghana and to explore heterogeneity in this association using causal machine learning.

An institution-based cross-sectional study was conducted using a retrospective review of medical records and causal machine learning analysis.

Juaben Government Hospital.

Of 2326 women who delivered at the hospital, 2114 with complete data on the main exposure and outcome variables were included in the analysis.

Completion of at least eight ANC contacts. ANC contact was defined as the in-person visit to the clinic with a healthcare professional for routine ANC services and follow-up.

Maternal anaemia, defined as a haemoglobin level below 11 g/dL in the last ANC before delivery.

A causal forest model was used to estimate the association between completing at least eight ANC contacts and maternal anaemia. Conditional average treatment effects were used to explore individual-level variation in these associations, providing policy-relevant insights.

Completing ≥8 ANC contacts was associated with a 6 percentage-point lower probability of maternal anaemia compared with having fewer visits (average treatment effect: -0.06, 95% CI –0.11 to –0.02). Predicted individual-level effects ranged from –0.21 to 0.09. Participants’ age, malaria prophylaxis, marital status, parity and educational level were the five most important contributors to the observed heterogeneity.

This study demonstrated that completing ≥8 ANC contacts is associated with a lower probability of maternal anaemia, with heterogeneity across subgroups. We recommend differentiated, context-specific ANC interventions that focus on high-impact subgroups while strengthening the effectiveness and quality of care delivered at each visit.

Despite growing interest in the therapeutic potential of 3,4-methylenedioxymethamphetamine (MDMA), no targeted measure to systematically assess side effects of MDMA-assisted psychotherapy (MDMA-AP) exists.

Our aim was to develop an MDMA-Assisted Psychotherapy Side Effects Tool (M-SET) to capture side effects over the course of MDMA-AP.

Informed by a systematic review and a review of other relevant questionnaires, we drafted a list of potential side effects. Face and content validation were obtained via a modified two-round online Delphi process involving experts in MDMA-AP and the neuropsychopharmacology of MDMA.

Twelve experts consented to participate over two rounds of Delphi panel deliberations (response rate: Round 1 = 83–92%, Round 2 = 75%). The Delphi panellists were asked to keep, discard, modify or suggest additional items. The final version of the M-SET consists of 165 items across four questionnaires that collect information at screening, baseline, the day of medication sessions and longer term follow-up.

The use of a modified Delphi technique proved a successful method to generate content for the first structured tool designed to evaluate side effects specifically associated with MDMA-AP.

The M-SET is recommended for use in both research and clinical settings. Its implementation has the potential to improve the safety of delivering MDMA-AP as well as support the development of a more systematic and robust evidence base on its safety and tolerability.

Video-assisted thoracoscopic surgery (VATS) lobectomy is a commonly employed surgical technique for the management of operable early stage non-small cell lung cancer (NSCLC). This procedure, however, is dependent on the patient’s ability to tolerate surgery. In light of this, stereotactic ablative radiotherapy (SABR) has emerged as a viable alternative treatment strategy for patients who are inoperable or who refuse surgery. Considering the lack of randomised controlled trials and the increased risk of bias in observational cohort studies, this study protocol proposes an emulated target trial design to investigate the causal effect of SABR, in comparison to VATS, on overall survival in operable early stage NSCLC patients.

Data on NSCLC patients will be collected from routinely collected university hospital records linked with German cancer registry data. This study protocol was developed using the target trial methodology outlined by Hernan et al. The protocol establishes specific parameters for key trial components in order to mitigate bias in the analysis of observational data and to facilitate the calculation of causal estimands. The target trial design that would be emulated is a multicentre open-label two-parallel arm superiority randomised trial. Mediators and confounding variables were determined through the use of a directed acyclic graph. The statistical analysis aims to measure the per-protocol and intention to treat effect of SABR versus VATS within 3 months of diagnosis, on survival, through the difference in restricted mean survival times, using weighted non-parametric Kaplan-Meier curves.

The Ethics Committee of the Medical Faculty of Martin Luther University Halle-Wittenberg with an approved addendum with Dnr 2023–112 has approved this study. The study uses anonymised routinely collected hospital and cancer registry data in accordance with applicable data protection regulations. Results will be disseminated through peer-reviewed publications and presentations at scientific conferences.

A significant number of women die from pregnancy and childbirth complications globally, particularly in low and middle-income countries. Receiving at least four antenatal care (ANC) visits is important in reducing maternal and perinatal deaths. However, few studies have investigated the factors linked to the completion of ≥4 ANC visits in Nepal.

To investigate factors associated with attending ≥4 ANC visits in Sarlahi district of southern Nepal.

A secondary analysis was conducted on data from the Nepal Oil Massage Study (NOMS), a cluster-randomised, community-based longitudinal pregnancy trial including 34 village development committees. We investigated the associations between attendance of ≥4 ANC visits and socioeconomic, demographic, morbidity and pregnancy history factors using logistic regression; generalised estimating equations were used to account for multiple pregnancies per woman. All pregnancies resulting in a live birth (LB) (n=31 867) were included.

Attendance of ≥4 ANC visits.

31.4% of those pregnancies received 4+ ANC visits. Significant positive associations included socioeconomic factors such as participation in non-farming occupations for women (OR=1.52, 95% CI 1.19 to 1.93), higher education (OR=1.79, 95% CI 1.66 to 1.93) and wealth quintile (OR=1.44, 95% CI 1.31 to 1.59), nutritional status such as non-short stature (OR=1.17, 95% CI 1.07 to 1.27), obstetric history such as adequate interpregnancy interval (OR=1.31, 95% CI 1.19 to 1.45) and prior pregnancy but no LB (OR=2.14, 95% CI 1.57 to 2.92), symptoms such as vaginal bleeding (OR=1.35, 95% CI 1.11 to 1.65) and awareness of the government’s conditional cash transfer ANC programme (OR=2.26, 95% CI 2.01 to 2.54). Conversely, identifying as the Shudra caste (OR=0.56, 95% CI 0.47 to 0.67), maternal age below 18 or above 35 (OR=0.81, 95% CI 0.74 to 0.88; OR=0.77, 95% CI 0.62 to 0.96), preterm birth (OR=0.41, 95% CI 0.35 to 0.49), parity ≥1 (OR=0.66, 95% CI 0.61 to 0.72) and the presence of hypertension during pregnancy (OR=0.79, 95% CI 0.69 to 0.90) were associated with decreased likelihood of attending ≥4 ANC visits.

These findings demonstrate the importance of socioeconomic factors, including education, caste, wealth and occupation in completion of ≥4 ANC visits. In addition, biological factors including birth spacing, pregnancy complications and nutrition are important. The association with awareness of the government’s conditional cash transfer programme is a motivation for a full evaluation of whether expanding that programme might improve prenatal care.

The clinicaltrial.gov trial registration number for NOMS was NCT01177111.

Adolescents and young adults (AYAs) represent a significant proportion of the global population, yet they face persistent barriers to accessing HIV services. In Sub-Saharan Africa, nearly 90% of AYA HIV cases occur within the region, with young women disproportionately affected. In Chad, while the overall HIV prevalence has declined, the risk remains high among AYA, accounting for 26.3% of all new infections. Stigma, lack of confidentiality, negative provider attitudes and structural barriers continue to hinder service utilisation, underscoring the urgent need for evidence-based, AYA-centred interventions. However, little is known about which attributes of HIV services AYA prioritise when accessing HIV care. This study applies a discrete choice experiment in Chad to systematically quantify AYA preferences for HIV services to inform the design of youth-responsive interventions.

The study employs a D-efficient fractional factorial design, developed through extensive qualitative research and pilot testing. The final design comprises 80 choice scenarios, divided into 10 blocks to reduce participant burden. The study will recruit 1000 AYA living with HIV aged 15–24 years across eight provinces, ensuring geographical and epidemiological representativeness. Participants will be randomly assigned to one of the blocks and complete eight choice tasks. Choice data will be analysed using conditional logit, mixed logit and latent class models to estimate trade-offs and preference heterogeneity.

Ethical approval was obtained from the National Committee on Bioethics of Chad (#010/MESRS/SE/SG/2024). In addition to disseminating findings through scientific publications, policy briefs and stakeholder engagements, the study will incorporate a codesign process with AYA, healthcare providers and policymakers to translate research findings into actionable interventions that align with AYA preferences and improve HIV service delivery.

Drug–drug interactions (DDIs) are a significant concern for patients on complex therapeutic regimens, especially involving cardiovascular medications, which are frequently implicated in these interactions.

This study used a standardised interaction database to determine the frequency, severity and risk factors associated with potential DDIs (pDDIs) among cardiovascular disease (CVD) in-patients.

The prospective cross-sectional study was conducted at a tertiary care hospital in Nepal from April 2024 to October 2024. A total of 106 eligible CVD in-patients were evaluated for pDDIs using the Lexicomp DDI checker database, and the interactions were categorised based on severity and risk rating. Binary logistic regression identified factors associated with pDDIs.

The study identified 621 pDDIs using the Lexicomp database, with median values of 8 pDDIs per patient. Patients with at least one pDDI comprised 64.2% of the sample. Most pDDIs were of moderate severity (77.3%) with risk ratings of C (65.7%). The most common cardiovascular medications involved in the detected DDI pairs were diuretics (31.2%), antiplatelets and anticoagulants (23.8%) and calcium channel blockers (12.2%). Multivariate binary logistic regression revealed that patients who stayed longer (adjusted OR (AOR) 9.08, 95% CI 1.027 to 80.216, p=0.047), those receiving more medications (AOR 18.85, 95% CI 2.975 to 119.370, p=0.002) and those who were admitted to the intensive cardiac care unit (AOR 16.31, 95% CI 2.728 to 97.461, p=0.002) were significantly more likely to experience pDDIs.

This study found a higher prevalence of pDDIs. It is advisable to incorporate medication reviews into routine cardiac care and use a drug interaction checker to identify pDDIs.

Human papillomavirus (HPV) is a major global health concern linked to cancers. Although a safe and effective vaccine exists, HPV vaccination rates are still low among Asian American and Pacific Islander (AAPI) populations. Barriers such as limited awareness, cultural stigma and systemic inequities contribute to this gap. This systematic review and meta-analysis aims to compile current evidence on HPV vaccination behaviours and related factors among AAPIs to help develop culturally tailored interventions and public health strategies.

This review will include descriptive and correlational studies (quantitative, qualitative and mixed methods), examining HPV vaccination intention or uptake among AAPI populations in the USA from inception to December 2024. Randomised controlled trials and intervention studies will be excluded. Databases to be searched include PubMed, CINAHL, PsycINFO and Cochrane. Study screening, data extraction and quality assessment will be conducted independently by three reviewers using standardised tools. Risk of bias in non-randomised studies will be assessed using Risk Of Bias In Non-randomised Studies of Interventions (ROBINS-I), and the Critical Appraisal Skills Programme (CASP) checklist will be used for qualitative studies. Quantitative findings will be synthesised narratively and, where appropriate, through meta-analysis using random-effects models. Qualitative themes will be synthesised to contextualise quantitative results.

Ethics approval is not required for this protocol as it does not involve primary data collection. Findings will be disseminated via peer-reviewed publications and conference presentations. Findings of this systematic review and meta-analysis will provide critical insights for promoting HPV vaccination and reducing HPV-related cancer disparities among AAPIs.

CRD420251008431.

Severe perinatal asphyxia at term or near term remains a critical public health issue, associated with high risks of neonatal death and hypoxic-ischaemic encephalopathy (HIE). Despite improved clinical guidelines, suboptimal care persists in many cases, and previous audits have demonstrated that up to 50% of asphyxia cases could be associated with suboptimal care. OptiNeoCare is a French study which aims to assess the prevalence and determinants of suboptimal obstetric and neonatal care and evaluate its potential impact on neonatal outcomes.

This prospective, population-based observational study will include newborns ≥36 weeks’ gestation with severe perinatal asphyxia across 12 French perinatal networks (213 maternity units). Inclusion criteria comprise neonatal death or moderate/severe HIE with confirmed biochemical markers of asphyxia. Data will be collected prospectively from labour wards, transport teams and neonatal intensive care units using an electronic case report form, and the in-situ team will be invited to complete a morbi-mortality review (MMR). Approximately 336 cases will be included over 12 months, with 25% randomly selected for confidential enquiry by two experts. The quality of care will be assessed based on a structured classification of medical errors (diagnostic, therapeutic, preventive and systemic) by a panel of experts including an obstetrician or midwife and a paediatrician. Root cause analysis will identify determinants of suboptimal care. A concordance analysis will compare findings from MMRs and confidential enquiries. Statistical analysis will include multivariable logistic regression to explore associations between care quality and neonatal outcomes.

Ethical approval was granted by the Ethics Committee for Research in Obstetrics and Gynaecology. Informed non-opposition is required from participants. Results will be shared with participating centres, healthcare professionals and through scientific dissemination.

ClinicalTrials.gov ID: NCT06322732.