Research

This paper estimates the intergenerational impacts of mothers' exposure to the 1980-2000 Peruvian civil conflict in childhood on their children's socio-emotional skills development. We combine longitudinal data, which measures skills across a child's life, with historical geo-located conflict data. Exploiting spatial and temporal variation in conflict episodes, we find that mothers' exposure to conflict has adverse intergenerational effects on their children's socio-emotional outcomes of agency and pride. These effects are present at ages 8 and 12 and are robust to alternative specifications. At age 15, mothers' conflict exposure increases children's propensity to engage in crime-related risky behaviour. Exploring the underlying mechanisms shows interim effects of conflict exposure on mothers' fertility decisions, household decision-making, and educational expenditures dedicated to the child. Finally, an examination of the mother's migration history reveals that migration decisions of her parents during the conflict partially mitigated the adverse effects on the socio-emotional development of their grandchildren.

This paper investigates the impact of different survey administration methods on the disclosure of sensitive or traumatic experiences. Respondents of a pilot study in Ethiopia were randomly assigned to answer questions either using audio computer-assisted self-interviewing (ACASI) or as part of a face-to-face (FtF) enumerator-based interview. Results indicate that ACASI led to higher disclosure rates of conflict-related experiences, particularly for the most sensitive questions, i.e., when either the respondent or a close friend or family member was the victim, or when the trauma suffered was more severe. ACASI offers a viable solution to measure traumatic conflict-related experience exposure in low-literacy settings, overcoming the underestimation problem commonly observed when using standard survey methods.

Background: The rapid rise in obesity rates among school children in Latin America and the Caribbean (LAC) could have a direct impact on the region's physical and mental health, disability, and mortality. This review presents the available interventions likely to reduce, mitigate and/or prevent obesity among school children in LAC by modifying the food and built environments within and around schools.

Methods: Two independent reviewers searched five databases: MEDLINE, Web of Science, Cochrane Library, Scopus and Latin American and Caribbean Health Sciences Literature for peer-reviewed literature published from 1 January 2000 to September 2021; searching and screening prospective studies published in English, Spanish and Portuguese. This was followed by data extraction and quality assessment using the Cochrane risk-of-bias tool (RoB 2) and the Risk of Bias in Non-Randomized Studies of Interventions (ROBINS-I), adopting also the PRISMA 2020 guidelines. Due to the heterogeneity of the intervention's characteristics and obesity-related measurements across studies, a narrative synthesis was conducted.

Results: A total of 1342 research papers were screened, and 9 studies were included; 4 in Mexico, and 1 each in Argentina, Brazil, Chile, Colombia, and Ecuador. Four studies reported strategies for modifying food provision; four other targeted the built environment, (modifying school premises and providing materials for physical activity); a final study included both food and built environment intervention components. Overall, two studies reported that the intervention was significantly associated with a lower increase over time in BMI/obesity in the intervention against the control group. The remaining studies were non-significant.

Conclusions: Data suggest that school environmental interventions, complementing nutritional and physical education can contribute to reduce incremental childhood obesity trends. However, evidence of the extent to which food and built environment components factor into obesogenic environments, within and around school grounds is inconclusive. Insufficient data hindered any urban/rural comparisons. Further school environmental intervention studies to inform policies for preventing/reducing childhood obesity in LAC are needed.

Background: The Young Lives longitudinal study switched to remote data collection methods including the adaptation of dietary intake assessment to online modes due to the physical contact restrictions imposed by the COVID-19 pandemic. This study aimed to describe the adaptation process and validation of an online quantitative food frequency questionnaire (FFQ) for Peruvian young adults.

Methods: A previously validated face-to-face FFQ for the adult Peruvian population was adapted to be administered through an online self-administered questionnaire using a multi-stage process. Questionnaire development was informed by experts' opinions and pilot surveys. FFQ validity was assessed by estimating misreporting of energy intake (EI) using the McCrory method, and the FFQ reliability with Cronbach alpha. Logistic regressions were used to examine associations of misreporting with sociodemographic, body mass index (BMI), and physical activity covariates.

Results: The FFQ was completed by 426 Peruvian young adults from urban and rural areas, among whom 31% were classified as misreporters, with most of them (16.2%) overreporting daily EI. Men had a lower risk of under-reporting and a higher risk of over-reporting (OR = 0.28 and 1.89). Participants without a higher education degree had a lower risk of under-reporting and a higher risk of over-reporting (OR = 2.18 and 0.36, respectively). No major difference in misreporting was found across age groups, areas, studying as the main activity, being physically active or sedentary, or BMI. Results showed good internal reliability for the overall FFQ (Cronbach alpha = 0.82).

Conclusion: Misreporting of EI was mostly explained by education level and sex across participants. Other sociodemographic characteristics, physical activity, sedentary behavior, and BMI did not explain the differences in EI misreporting. The adapted online FFQ proved to be reliable and valid for assessing dietary intakes among Peruvian young adults during the COVID pandemic. Further studies should aim at using and validating innovative dietary intake data collection methods, such as those described, for informing public health policies targeting malnutrition in different contexts after the COVID-19 pandemic.

This paper studies the impact of a family planning reform in Peru that removed age-based restrictions and introduced confidential and adolescent-friendly services. Using a difference-in-differences design with administrative birth records and nationally representative survey data, I find that the reform significantly reduced adolescent fertility—by up to 15% overall and 21% among girls living near treated facilities. These effects were concentrated among adolescents from wealthier, urban, and male-headed households, and were driven by increased condom use, better contraceptive knowledge, and a possible transition toward more formal sources of information. The reform also led to declines in early cohabitation and modest improvements in school progression. Although COVID-19 temporarily disrupted these gains, fertility reductions resumed once services reopened, showing how the importance of institutional access and service continuity in shaping adolescent reproductive outcomes.

This paper exploits several waves of two major nationwide representative surveys to document the impacts of climate shocks on individuals and households in Zambia. We merge these datasets with historical precipitation and temperature data at the district level.  First, we show the gendered effects of the shocks, which have a higher negative impact on women. Women have a lower probability of being in the labour force and fewer hours of work when experiencing shocks. Second, we show that households affected by climate shocks have 16% lower consumption, which is mainly explained by female-headed households. We show that social protection policies mitigate income reduction but not consumption, which may suggest that climate shocks affect households directly by reducing their income, but also indirectly by raising food prices.