Outcomes measured in studies assessing health systems interventions for type 1 diabetes management: A scoping review.

AIMS: Describe the outcomes reported in research on health systems interventions for type 1 diabetes management in comparison to the outcomes proposed by a core outcome set (COS) for this condition, an essential list of outcomes that studies should measure. METHODS: Systematic search of studies published between 2010 and 2021 reporting health systems interventions directed to improve the management of type 1 diabetes using PubMed, EMBASE and CENTRAL. Information on the outcomes was extracted and classified according to a COS: self-management, level of clinical engagement, perceived control over diabetes, diabetes-related quality of life, diabetes burden, diabetes ketoacidosis, severe hypoglycemia, and glycated hemoglobin (HbA1C). RESULTS: 187 studies were included. Most of the studies included either children (n = 82/187) or adults (n = 82/187) living with type 1 diabetes. The most common outcome measured was HbA1C (n = 149/187), followed by self-management (n = 105/187). While the least measured ones were diabetes ketoacidosis (n = 15/187), and clinical engagement (n = 0/187). None of the studies measured all the outcomes recommended in the COS. Additionally, different tools were found to be used in measuring the same outcome. CONCLUSIONS: This study provides a description of what researchers are measuring when assessing health systems interventions to improve type 1 diabetes management. In contrast to a COS, it was found that there is a predominance of clinical-based outcomes over patient-reported outcome measures.

Involving different stakeholders in prioritising outcomes to assess healthcare systems response for type 1 diabetes management: Using co-creation approaches in Peru.

BACKGROUND: Engaging diverse stakeholders in developing core outcome sets (COSs) can produce more meaningful metrics as well as research responsive to patient needs. The most common COS prioritisation method, Delphi surveys, has limitations related to selection bias and participant understanding, while qualitative methods like group discussions are less frequently used. This study aims to test a co-creation approach to COS development for type 1 diabetes (T1DM) in Peru. METHODS: Using a co-creation approach, we aimed to prioritise outcomes for T1DM management in Peru, incorporating perspectives from people with T1DM, caregivers, healthcare professionals, and decision-makers. A set of outcomes were previously identified through a systematic review and qualitative evidence synthesis. Through qualitative descriptive methods, including in-person workshops, each group of stakeholders contributed to the ranking of outcomes. Decision-makers also discussed the feasibility of measuring these outcomes within the Peruvian healthcare system. RESULTS: While priorities varied among participant groups, all underscored the significance of monitoring healthcare system functionality over mortality. Participants recognized the interconnected nature of healthcare system performance, clinical outcomes, self-management, and quality of life. When combining the rankings from all the groups, metrics related to economic impact on the individual and structural support, policies promoting health, and protecting those living with T1DM were deemed more important in comparison to measuring clinical outcomes. CONCLUSION: We present the first COS for T1DM focused on low-and-middle-income countries and show aspects of care that are relevant in this setting. Diverse prioritisation among participant groups underscores the need of inclusive decision-making processes. By incorporating varied perspectives, healthcare systems can better address patient needs and enhance overall care quality.

Characteristics of undergraduate and second speciality mental health programmes in Peru: a cross-sectional study.

BACKGROUND: This study aims to describe the training offered and the availability of professionals required by the Ministry of Health for mental health problems management in the community. METHODS: A cross-sectional study was carried out on the training offered in mental health in Peruvian universities. A search for programs was conducted using the University Information System database and universities' websites, as well as using the Ministry of Health's database on health personnel and data on the number of enrolled and current students provided by the University Information System database and the Transparency section of the universities. RESULTS: There were 214 undergraduate, 55 specialty and 7 subspecialty programmes, of which 39%, 47% and 100%, respectively, were offered in the capital city. The duration ranged from 5 to 7 years for undergraduate programs and from 1 to 3 years for subspecialty and second specialty programs. The cost of undergraduate programs ranged from free of charge up to USD 6863.75 for the first semester of study. Second specialty programs ranged from 720 up to 11 986 USD and subspecialty programs ranged from 2267 up to 9138 USD, with medicine being the most expensive. On the other hand, there are a greater number of psychology students (n = 78 781) pursuing undergraduate studies than working professionals (n = 5368), while in the second specialty of psychiatry there are far fewer students pursuing the specialty (n = 67) than working professionals (n = 454). CONCLUSIONS: The problem of professional training in mental health requires that the institutions involved in health and education develop policies to decentralize programs, communicate the demand for professionals in certain areas, make them accessible to the low-income population, respond to mental health problems and guarantee their quality. On the other hand, regarding the low number of mental health personnel working, it is suggested to increase the mental health budget to generate more mental health services and employment.

Association between maternity leave policies and postpartum depression: a systematic review.

PURPOSE: Working mothers are at greater risk for postpartum depression. Maternity leave characteristics, including length, wage replacement and employment protection, could have relevant implications for mothers' mental health. We propose to explore whether there is an association between maternity leave characteristics and postpartum depression. METHODS: We conducted a systematic review searching for randomized controlled trials, quasi-experimental, cohort or cross-sectional studies on five databases using search terms including maternity and parental leave and depression, as well as references in relevant articles. We identified 500 articles and included 23 of those. We used the EPHPP Quality Assessment Tool for Quantitative Studies to assess the quality of the studies. RESULTS: Paid and longer maternity leaves tend to be associated with a reduction of postpartum depression symptoms in high-income countries. No studies explored the association between employment protection and postpartum depression. The quality of studies ranged from strong to weak, mostly influenced by study design. CONCLUSION: More restrictive maternity leave policies tend to be associated with higher rates of postpartum depression, although more research needs to be conducted in the Global South.

Going digital: opportunities and barriers in the use of technology for health research.

Digital health refers to the use of novel information com-munication technologies in healthcare. The use of these technologies could positively impact public health and health outcomes of populations by generating timely data, and facili-tating the process of data collection, analysis, and knowledge translation. Using selected case studies, we aim to describe the opportunities and barriers in the use of technology applied to health-related research. We focus on three areas: strategies to generate new data using novel data collection methods, strategies to use and analyze existing data, and using digital health for health-related interventions. Exemplars from seven countries are provided to illustrate activity across these areas. Although the use of health-related technologies is increasing, challenges remain to support their adoption and scale-up -especially for under-served populations. Research using digital health approaches should take a user-centered design, actively working with the population of interest to maximize their uptake and effectiveness.

Stroke care and collaborative academic research in Latin America.

OBJECTIVE: A narrative overview of regional academic research collaborations to address the increasing burden and gaps in care for patients at risk of, and who suffer from, stroke in Latin America (LA). MATERIALS AND METHODS: A summary of experiences and knowledge of the local situation is presented. No systematic literature review was performed. RESULTS: The rapidly increasing burden of stroke poses immense challenges in LA, where prevention and manage-ment strategies are highly uneven and inadequate. Clinical research is increasing through various academic consortia and networks formed to overcome structural, funding and skill barriers. However, strengthening the ability to generate, analyze and interpret randomized evidence is central to further develop effective therapies and healthcare systems in LA. CONCLUSIONS: Regional networks foster the conduct of multicenter studies -particularly randomized controlled trials-, even in resource-poor regions. They also contribute to the external validity of international studies and strengthen systems of care, clinical skills, critical thinking, and international knowledge exchange.

COVID-19's impact on type 1 diabetes management: A mixed-methods study exploring the Peruvian experience.

INTRODUCTION: The COVID-19 pandemic has negatively impacted health services, especially in low-and-middle-income countries, where care for chronic conditions such as diabetes was disrupted. Our study aims to describe the challenges faced by people living with Type 1 diabetes mellitus (T1DM) to access care during the COVID-19 pandemic in Peru. METHODS: A sequential explanatory mixed-method study was conducted between May and September 2020 including health professionals involved in T1DM care, people with T1DM and their caregivers. The study consisted of a quantitative strand to gather general information through electronic surveys and a qualitative strand that involved in-depth interviews. RESULTS: For the quantitative study, we included 105 people with T1DM, 50 caregivers and 76 health professionals. The qualitative study included a total of 31 interviews; 16 people with T1DM, 14 health care professionals, and one representative from the Peruvian Ministry of Health (MoH). People with T1DM faced difficulties accessing consultations, insulin, monitoring devices and laboratory testing during the pandemic. Different phases of the Peruvian health system response were found. Firstly, an initial informal response to addressing T1DM care during the pandemic characterised by local initiatives to ensure continuity of care for people with T1DM. Following from this, a formal response was implemented by the MoH which focussed on reinforcing the primary level of care. Measures included teleconsultations and delivery of medicines, although these were not implemented in all health care establishments. Throughout the pandemic patient associations played an important role in organising and helping to counteract the impact of COVID-19 on people with T1DM. CONCLUSIONS: The Peruvian health care system slowly adapted to the COVID-19 pandemic to provide care for people with T1DM. However, people with T1DM had difficulties to access care. Thus, reinforcement of interventions such as communication between levels of care, teleconsultations and delivery of medicines was urgently needed. Patient associations' capacity to respond should be considered by local authorities and civil society should be part of the health system response.

Managing Post-Stroke Care During the COVID-19 Pandemic at a Tertiary Care Level Hospital in Peru.

OBJECTIVES: To understand the hospital-to-outpatient care transition and how the discharge process of stroke patients is managed; and to identify potential opportunities to improve these processes, while contrasting pre- and during COVID-19 experiences in Peru. METHODS: A qualitative study was conducted between February and March 2021 consisting of in-depth interviews of patients with stroke, their caregivers and healthcare personnel regarding stroke care at a national tertiary referral center for stroke care in Lima, Peru. We explored the following phases of the patients' journeys: pre-hospitalization, emergency room, hospitalization, discharge process and post-discharge. For each phase, we explored experiences, feelings and expectations using thematic analysis. RESULTS: We conducted a total of 11 interviews with patients or caregivers and 7 with health care personnel and found disruption in the continuity of care for patients with stroke. Mainly, caregivers and patients referred to problems related to communication with healthcare personnel and an absence of training to provide post-discharge care at home. Potential solutions included increasing human resources and caregiver participation in care, implementation of electronic healthcare records, improving the referral system and reinforcing telemedicine services. CONCLUSION: The continuity of care of patients with stroke was negatively affected during the COVID-19 pandemic. In LMICs, the impact was likely greater due to the already weak and fragmented healthcare systems. The COVID-19 pandemic presents an opportunity to improve post-stroke care services, and address patients' experiences and feelings by developing solutions in a participatory manner.

Preoperative breast magnetic resonance imaging in patients with ductal carcinoma in situ: a systematic review for the European Commission Initiative on Breast Cancer (ECIBC).

OBJECTIVE: To evaluate the impact of preoperative MRI in the management of Ductal carcinoma in situ (DCIS). METHODS: We searched the PubMed, EMBASE and Cochrane Library databases to identify randomised clinical trials (RCTs) or cohort studies assessing the impact of preoperative breast MRI in surgical outcomes, treatment change or loco-regional recurrence. We provided pooled estimates for odds ratios (OR), relative risks (RR) and proportions and assessed the certainty of the evidence using the GRADE approach. RESULTS: We included 3 RCTs and 23 observational cohorts, corresponding to 20,415 patients. For initial breast-conserving surgery (BCS), the RCTs showed that MRI may result in little to no difference (RR 0.95, 95% CI 0.90 to 1.00) (low certainty); observational studies showed that MRI may have no difference in the odds of re-operation after BCS (OR 0.96; 95% CI 0.36 to 2.61) (low certainty); and uncertain evidence from RCTs suggests little to no difference with respect to total mastectomy rate (RR 0.91; 95% CI 0.65 to 1.27) (very low certainty). We also found that MRI may change the initial treatment plans in 17% (95% CI 12 to 24%) of cases, but with little to no effect on locoregional recurrence (aHR = 1.18; 95% CI 0.79 to 1.76) (very low certainty). CONCLUSION: We found evidence of low to very low certainty which may suggest there is no improvement of surgical outcomes with pre-operative MRI assessment of women with DCIS lesions. There is a need for large rigorously conducted RCTs to evaluate the role of preoperative MRI in this population. KEY POINTS: • Evidence of low to very low certainty may suggest there is no improvement in surgical outcomes with pre-operative MRI. • There is a need for large rigorously conducted RCTs evaluating the role of preoperative MRI to improve treatment planning for DCIS.

Effects of dog-assisted therapy in adults with dementia: a systematic review and meta-analysis.

BACKGROUND: Dog-assisted therapy (DAT) is a non-pharmacological intervention based on the interaction between patients and dogs, which has been proposed to help adults with dementia. However, evidence to support it is lacking. Thus, we aim to evaluate the effects of DAT on this population and to assess the certainty of the evidence of the RCTs estimates. METHODS: A systematic search was performed. We included randomized controlled trials (RCTs) and quasi-experimental (QE) controlled studies published up to March 2018, which evaluated the beneficial and deleterious effects of DAT in adults with dementia. Mean differences (MD) or standardized mean differences (SMD) and their 95% confidence intervals (95% CI) were calculated and random effects meta-analyses were performed. Certainty of evidence was assessed for RCTs estimates using the Grading of Recommendations Assessment, Development, and Evaluation (GRADE) methodology. The study protocol has been registered in PROSPERO (CRD42018090434). RESULTS: Ten studies (six RCTs and four QE controlled studies) were eligible for inclusion. Meta-analysis of RCTs showed no effect of DAT in daily life activities (SMD: 0.16; 95% CI: -0.80 to 1.12), depression (SMD: -0.45; 95% CI: -2.81 to 1.91), agitation (SDM: -1.12; 95% CI: -2.67 to 0.43), quality of life (SDM: 0.16; 95% CI: -0.41 to 0.73), and cognitive impairment (SDM: -0.52; 95% CI: -1.33 to 0.30), but it found a beneficial effect in apathy (1 study, n = 37, MD: 1.81; 95% CI: 1.26 to 2.36). All outcomes had a very low certainty of evidence according to GRADE methodology. CONCLUSIONS: RCTs evidence of very low certainty suggests that, in adults with dementia, DAT has no effect in daily life activities, depression, agitation, quality of life, and cognitive impairment, although one small study found an apparent beneficial effect in apathy. More well-designed and correctly reported studies are needed in order to provide a conclusion. TRIAL REGISTRATION: CRD42018090434 (PROSPERO).

Characteristics and quality of clinical practice guidelines for depression in adults: a scoping review.

BACKGROUND: Clinical Practice Guidelines (CPGs) should follow an adequate methodology using an evidence-based approach in order to provide reliable recommendations. However, little is known regarding the quality of CPGs for Depression, which precludes its adequate use by stakeholders and mental health professionals. Thus, the aim of this study was to conduct a scoping review to describe the characteristics and quality of CPGs for Depression in adults. METHODS: We searched CPGs for Depression in adults in eighteen databases. We included those that were published in English or Spanish between January 2014 and May 2018 and were based on systematic reviews of the evidence. Two independent authors extracted the characteristics, type and number of recommendations, and quality (using the Appraisal of Guidelines for Research and Evaluation-II [AGREE-II]) of each included CPG. RESULTS: We included eleven CPGs, of which 9/11 did not include the participation of patients in the development of the CPG, 4/11 CPGs had a score ≥ 70% in the overall evaluation of AGREE-II, and 3/11 CPGs had a score ≥ 70% in its third domain (rigor of development). In addition, only 5/11 CPGs shared their search strategy, while only 4/11 listed the selected studies they used to reach recommendations, and 7/11 CPGs did not clearly state which methodology they used to translate evidence into a recommendation. CONCLUSIONS: Most of evaluated CPGs did not take into account the patient's viewpoints, achieved a low score in the rigor of development domain, and did not clearly state the process used to reach the recommendations. Stakeholders, CPCGs developers, and CPGs users should take this into account when choosing CPGs, and interpreting and putting into practice their issued recommendations.

Potential excess of vaginal examinations during the management of labor: frequency and associated factors in 13 Peruvian hospitals.

BACKGROUND: A high number of vaginal examinations (VEs) may lead to a higher risk of infections, as well as discomfort/dissatisfaction with intrapartum care. OBJECTIVE: To determine the frequency of potential excess of vaginal examinations (PEVE) during the management of labor and identify its associated factors, in Peruvian hospitals. METHODS: Secondary analysis of the data collected in the DisrespEct and abuse during ChIlDbirth in pEru (DECIDE) study, held between April and May 2016. In this study, women hospitalized in Peruvian hospitals right after giving birth were surveyed by trained personnel. PEVE, the main outcome, was considered as five or more vaginal examinations (VEs) performed during the management of labor. Poisson regression models with robust variance were performed to calculate crude and adjusted prevalence ratios (cPR and aPR) as well as their 95% confidence intervals (95% CI). RESULTS: One thousand four hundred twenty registries of 13 hospitals from 8 Peruvian cities were evaluated. The number of women studied at each hospital ranged between 100 and 129. The median age was 26 years (interquartile rank: 22-31). The median number of VEs was 3 (interquartile rank: 2-5). The proportion of women who underwent PEVE was 33.9%, this ranged from 0.9 to 69.9% at the studied hospitals. The frequency of PEVE was higher in women who attended > 2 obstetric psychoprophylaxis sessions, compared to those who attended ≤ 2 sessions (aPR: 1.78 95% CI: 1.01-3.12); and among women who gave birth between 18:00 h and 23:59 h, compared to those who did it between 7:00 and 17:59 h (aPR: 1.28 95% CI: 1.04-1.57). CONCLUSION: Around one in three women underwent a PEVE, although this frequency varied widely across the evaluated hospitals. Women with more psychoprophylaxis sessions, and who gave birth between 18:00 h and 23:59 h, had a higher PEVE frequency. Future studies should assess in depth the causes and consequences of this high frequency.

Self-perceived competencies in the diagnosis and treatment of mental health disorders among general practitioners in Lima, Peru.

AIM: To assess the self-perceived competencies in diagnosing and treating patients with mental health disorders, among recently graduated general practitioners (GPs) from Lima, Peru. METHODS: A cross-sectional study was performed in April 2017 at a General Practitioner's meeting held for those who were going to perform the social service, by the Peruvian College of Physicians in Lima. Attendees were invited to answer a questionnaire that evaluated their self-perception of competence in diagnosing and treating four different mental health disorders; major depression, anxiety disorder, alcohol dependence, and schizophrenia. RESULTS: Out of 434 evaluated GPs, the following percentages were self-perceived as competent in their adequate diagnosis of depression (70.5%), anxiety (73.3%), alcohol dependence (67.6%), and schizophrenia (62.0%). Concerning pharmacological treatment, these percentages were 46.6, 47.5, 39.0 and 37.6%, respectively. Referring to all the studied mental disorders, 41.6% of participants self-perceived competence in providing an adequate diagnosis, 36.1% in providing non-pharmacological treatment, and 20.1% in providing pharmacological treatment. CONCLUSION: The rate of adequate self-perceived competences was higher for diagnosis than for treatment of patients with mental health disorders. These results highlight the importance of designing and implementing interventions to improve medical education so as to develop the skills necessary to confront mental health disorders.

Training opportunities for noncommunicable diseases research in Latin America: A scoping review.

OBJECTIVE: To identify gaps in postgraduate training and options for building capacity in noncommunicable disease (NCDs) research in Latin America. METHODS: This was a scoping review of postgraduate opportunities in NCDs at top universities in Latin America and of training grants awarded by international funding bodies. Three global university rankings were considered-the QS Ranking, the Shanghai Ranking, and the Times Ranking. Latin American universities appearing in at least two of these were selected. University websites were searched for current graduate programs in biostatistics, epidemiology, global health, health economics, and public health. Information was extracted, summarized, and evaluated to identify any programs focused on NCDs. In addition, seven international funding bodies' websites were searched for training grants. RESULTS: In all, 33 universities offering 72 postgraduate programs met the inclusion criteria. One of these programs was exclusively devoted to NCD, and 12 offered NCDs as a dissertation research topic. Only two training grants were awarded to a Latin American institution for NCD capacity building. There are few NCD research training programs in Latin America and only one program exclusively focused on NCDs. CONCLUSION: There seem to be few NCD-specific research training programs in Latin America. Leveraging existing programs and expanding those with a focus on NCDs could help enhance NCD research capacity in the region. These initiatives should be supported by international funding agencies through more funding opportunities.

[Clinical practice guideline for the evaluation and management of upper gastrointestinal bleeding for the Peruvian Social Security (EsSalud)]. / Guía de práctica clínica para la evaluación y el manejo de la hemorragia digestiva alta en el Seguro Social del Perú (EsSalud).

OBJECTIVE: To provide evidence-based clinical recommendations for the evaluation and management of patients with upper gastrointestinal bleeding (UGB) in the Peruvian Social Security (EsSalud). MATERIALS AND METHODS: A local guideline development group (local GDG) was established, including specialists in gastroenterology and methodologists. The local GDG formulated 11 clinical questions to be answered by this clinical practice guide (CPG). We searched and selected CPG of UGB published from 2012, which answered the posed questions and obtained a score higher than 60% in domains 1 and 3 of the Appraisal of Guidelines for Research and Evaluation II (AGREE-II) tool. During September 2017, bibliographic searches were conducted in Pubmed, to update 9 clinical questions of the preselected CPGs, and to answer 2 de novo questions. The quality of the evidence was evaluated using the Grading of Recommendations Assessment, Development, and Evaluation (GRADE) methodology. In periodic work meetings, the local GDG reviewed the evidence and formulated the recommendations, points of good clinical practice and the flowchart of evaluation and management, using the GRADE methodology Lastly, the CPG was approved with Resolución N° 80-IETSI-ESSALUD-2017. RESULTS: This CPG addressed 11 clinical questions, divided into four themes: risk assessment, initial management, management of non-variceal UGB, and management of variceal UGB. Based on these questions, 10 recommendations (7 strong recommendations and 3 weak recommendations), 24 points of good clinical practice, and 2 flow charts were formulated. CONCLUSION: This article is the summary of the EsSalud' CPG, where the available scientific evidence on evaluation and management of UGB was evaluated.

Religious leaders' perceptions of the identification and referral of people with mental health problems in a Peruvian city.

INTRODUCTION: Religious leaders have the potential to play a significant role in the identification and referral of individuals with mental health problems. OBJECTIVE: This study sought to understand the perceptions of religious leaders in regards to identifying and referring parishioners with mental health issues to healthcare professionals, in Chimbote, Peru. METHODS: We performed a cross-sectional study that covered religious leaders of different religious groups in Chimbote. The leaders completed a survey that assessed their characteristics, past experiences of detecting and referring those with mental health problems to healthcare professionals, and perceptions of four clinical cases (for which we used the Clergy's Perception of Mental Illness Survey instrument). RESULTS: We included 109 religious' leaders of four religious groups (11 Catholics, 70 Evangelicals, 21 Mormons, and 7 Adventists). Of these, 50.5% had received at least one request for help with mental health issues from a parishioner in the previous month, over 85% expressed a desire for training in identifying mental health problems, and 22-30% reported receiving any training. While the majority of leaders were able to correctly identify cases of depression, alcohol dependence, and drug problems, only 62% correctly classified a case of schizophrenia. Despite this, 80% stated that they would refer their parishioners to healthcare professionals. CONCLUSION: Parishioners tend to consult their religious leaders regarding their mental health and approximately 80% stated they would refer such cases to a healthcare professional. However, less than one-third of the leaders had received training to detect mental health problems. These results suggest that there is a need for training programs to improve the ability of religious leaders to identify and refer individuals with mental health issues.

Effectiveness and Cost-Effectiveness of Self-Management Interventions for Adults Living with Heart Failure to Improve Patient-Important Outcomes: An Evidence Map of Randomized Controlled Trials.

Self-management interventions (SMIs) may enhance heart failure (HF) outcomes and address challenges associated with disease management. This study aims to review randomized evidence and identify knowledge gaps in SMIs for adult HF patients. Within the COMPAR-EU project, from 2010 to 2018, we conducted searches in the databases MEDLINE, CINAHL, Embase, Cochrane, and PsycINFO. We performed a descriptive analysis using predefined categories and developed an evidence map of randomized controlled trials (RCTs). We found 282 RCTs examining SMIs for HF patients, comparing two to four interventions, primarily targeting individual patients (97%) globally (34 countries, only 31% from an European country). These interventions involved support techniques such as information sharing (95%) and self-monitoring (62%), often through a mix of in-person and remote sessions (43%). Commonly assessed outcomes included quality of life, hospital admissions, mortality, exercise capacity, and self-efficacy. Few studies have focused on lower socio-economic or minority groups. Nurses (68%) and physicians (30%) were the primary providers, and most studies were at low risk of bias in generating a random sequence for participant allocation; however, the reporting was noticeably unclear of methods used to conceal the allocation process. Our analysis has revealed prevalent support techniques and delivery methods while highlighting methodological challenges. These findings provide valuable insights for researchers, clinicians, and policymakers striving to optimize SMIs for individuals living with HF.

City features related to obesity in preschool children: a cross-sectional analysis of 159 cities in six Latin American countries.

Background: Childhood obesity is a rising global health problem. The rapid urbanization experienced in Latin America might impact childhood obesity through different pathways involving urban built and social features of cities. We aimed to evaluate the association between built and social environment features of cities and childhood obesity across countries and cities in Latin America. Methods: Cross-sectional analysis of data from 20,040 children aged 1-5 years living in 159 large cities in six Latin American countries. We used individual-level anthropometric data for excess weight (overweight or obesity) from health surveys that could be linked to city-level data. City and sub-city level exposures included the social environment (living conditions, service provision and educational attainment) and the built environment (fragmentation, isolation, presence of mass transit, population density, intersection density and percent greenness). Multi-level logistic models were used to explore associations between city features and excess weight, adjusting for age, sex, and head of household education. Findings: The overall prevalence of excess weight among preschool children was 8% but varied substantially between and within countries, ranging from 4% to 25%. Our analysis showed that 97% of the variability was between individuals within sub-city units and around 3% of the variance in z-scores of weight for height was explained by the city and sub-city levels. At the city-level, a higher distance between urban patches (isolation, per 1 SD increase) was associated with lower odds of excess weight (OR 0.90, 95% CI 0.82-0.99). Higher sub-city education was also associated with lower odds of excess weight, but better sub-city living conditions were associated with higher odds of excess weight. Interpretation: Built and social environment features are related to excess weight in preschool children. Our evidence from a wide range of large Latin American cities suggests that urban health interventions may be suitable alternatives towards attaining the goal of reducing excess weight early in the life course. Funding: The SALURBAL project (Salud Urbana en América Latina, Urban Health in Latin America) is funded by Wellcome [205177/Z/16/Z].