Adolescents in informal urban communities, defined as settlements that fall outside of formal governmental planning and regulatory frameworks, are at increasing risk of poor-quality diets and malnutrition in all its forms. The food environment is the interface of adolescent food choice and the broader food system, and food environment interventions have the potential to improve adolescent diets and nutritional outcomes.

We will conduct a mixed-methods study, integrating methods from participatory systems science and nutritional epidemiology to characterise linkages among adolescents’ neighbourhood and home food environments, and their food choices, diets and nutritional outcomes. We will recruit adolescents, caregivers, school staff and food system actors from five communities along a gradient of urban informality in Nairobi, Kenya, to participate in cognitive mapping, group-based modelling and a cohort study over one academic year to evaluate dietary choices and nutritional outcomes.

The study has been approved by the Research Ethics Committee of Rutgers University (Pro2024001981) and Amref Health Africa (P1831-2025). Adult participants will provide written informed consent, and adolescents will provide written informed assent to participate in the study. Findings will be disseminated through peer-reviewed journals, conference presentations and to participants through planned participatory interaction throughout the study.

To assess the quality of amoxicillin products in Indonesia’s private market by surveying the range of products available across different areas, followed by product sampling and laboratory testing.

A cross-sectional survey employing mystery shoppers to purposively sample the widest possible range of amoxicillin products available to patients across different areas in Indonesia.

Licensed and unlicensed medicine outlets in remote, rural and urban areas and online.

Amoxicillin products that are sold to patients as oral solid and dry liquid formulations.

Quality of amoxicillin products, assessed using compendial testing of active pharmaceutical ingredient content and dissolution. Samples that failed any quality test were classified as substandard or out-of-specification (OOS). The raw prevalence of substandard amoxicillin was adjusted based on the national market volume of each product variant.

We surveyed 476 outlets, mostly pharmacies (68.5%), websites (19.7%) and drug stores (10.9%). Among the 120 collected samples, there were 59 distinct products, collectively representing 95% of the estimated market volume for oral solid products and 65% for dry syrups. 12 out of 110 oral solid samples tested OOS (10.9%), as did 3 out of 10 dry syrups (30%). The samples that failed originated from various areas and types of outlets. We found no relation between the price and quality of amoxicillin.

The oral solid amoxicillin products that tested OOS represent an estimated 12.7% of the national market volume. We found no relation between the price and quality of amoxicillin. Combining product-variety sampling with data on market volume presents a promising approach to gain insight into the prevalence of poor-quality medical products using a relatively small sample size.

To analyse patient profiles, transportation patterns and time delays in ischaemic time and door-to-balloon (DTB) time and evaluate the effect of these delays on in-hospital mortality among patients undergoing primary percutaneous coronary intervention (P-PCI) for ST-segment elevation myocardial infarction (STEMI) at a tertiary care hospital in Colombo.

Retrospective observational study.

Tertiary care hospital specialising in STEMI treatment, located in Sri Lanka.

The study included adults aged 16–87 years admitted for P-PCI between January 2018 and September 2023, presenting with STEMI and undergoing emergency P-PCI. Patients with incomplete records or unrealistic values on ischaemic time or DTB time were excluded.

Outcome measures include ischaemic time, DTB time and in-hospital mortality. The associations of demographic factors, transfer methods and DTB time with survival rates were analysed.

A total of 1758 patients underwent P-PCI (mean age, 53.0±11.64), with 85.2% being male. The male risk group was 46–60 years (OR, 1.22), whereas the female risk group was predominantly older than 60 years (OR, 1.87). The median ischaemic time was 4 hours and 36 min, and the median DTB time was 110 min. The in-hospital mortality rate was 3.8% (63/1,664). Prolonged DTB times exceeding 120 min were significantly associated with increased mortality (p=0.046), although alternative thresholds (45, 60 or 90 min) were not significant (p>0.05). Binary logistic regression with multiple variables identified female sex (OR, 2.52; 95% CI, 1.168 to 5.435, p=0.018), increasing age (OR 1.05; 95% CI, 1.016 to 1.085, p=0.004) and DTB times (OR, 1.001; 95% CI, 1.000 to 1.002, p=0.027) as independent predictors of mortality.

Despite improvements in DTB times, this study indicates that prolonged delays exceeding 120 min remain associated with increased mortality. Older age and female sex were identified as independent predictors of higher mortality. These findings underscore the need for efficient patient transfer methods and prompt decision-making at the primary healthcare level to minimise delays and disparities in P-PCI outcomes.