Dengue Virus Serotype 3 Origins and Genetic Dynamics, Jamaica.

We identified 3 clades of dengue virus serotype 3 belonging to genotype III isolated during 2019-2020 in Jamaica by using whole-genome sequencing and phylogenomic and phylogeographic analyses. The viruses likely originated from Asia in 2014. Newly expanded molecular surveillance efforts in Jamaica will guide appropriate public health responses.

Intersecting Stigma and the HIV Care Cascade: Qualitative Insights from Sex Workers, Men who have Sex with Men, and Transgender Women Living with HIV in Jamaica.

In Jamaica, stigma experiences of sex workers (SW), gay men and other men who have sex with men (MSM), and transgender women living with HIV remain understudied. To address this gap, we explored experiences of stigma and linkages with the HIV care cascade among key populations living with HIV in Jamaica, including cisgender women SW, MSM, and transgender women. This qualitative study involved n = 9 focus groups (FG), n = 1 FG per population living with HIV (SW, MSM, transgender women) in each of three sites (Kingston, St. Ann, Montego Bay). We also conducted key informant (KI) interviews. We applied thematic analysis informed by the Health Stigma and Discrimination (HSD) Framework. FG participants (n = 67) included SW (n = 18), MSM (n = 28), and trans women (n = 21); we interviewed n = 10 KI (n = 5 cisgender women, n = 5 cisgender men). Participant discussions revealed that stigma drivers included low HIV treatment literacy, notably misinformation about antiretroviral therapy (ART) benefits and HIV acquisition risks, and a lack of legal protection from discrimination. Stigma targets health (HIV) and intersecting social identities (sex work, LGBTQ identities, gender non-conformity, low socio-economic status). Stigma manifestations included enacted stigma in communities and families, and internalized stigma-including lateral violence. HIV care cascade impacts included reduced and/or delayed HIV care engagement and ART adherence challenges/disruptions. Participants discussed strategies to live positively with HIV, including ART adherence as stigma resistance; social support and solidarity; and accessing affirming institutional support. In addition to addressing intersecting stigma, future research and programing should bolster multi-level stigma-resistance strategies to live positively with HIV.

Prevalence and predictors of cigarette smoking among people with HIV in Western Jamaica.

With highly active antiretroviral therapy, HIV infection has become a treatable chronic disease. However, modifiable risk factors such as cigarette smoking continue to impact the morbidity and mortality of people with HIV (PWH). We assessed the prevalence and factors associated with cigarette smoking and motivation to quit among PWH in Western Jamaica. A cross-sectional study was conducted in which 392 adults seeking HIV care at health facilities in Western Jamaica completed an interviewer-administered questionnaire. Current smoking prevalence among participants was 17.4%. Current smoking was significantly associated with being male (OR = 2.99), non-Christian/non-Rastafarian (OR = 2.34), living or working with another smoker (aOR =1.86), being moderate to severely depressed (OR = 3.24), having an alcohol drinking problem (OR = 1.84), and never being asked by a healthcare provider if they smoked (OR = 3.24). Among the PWH who currently smoke, 36.7% are moderately to highly dependent on nicotine. One-third of people who smoke (33.8%) started smoking for the first time after HIV diagnosis, while 66.2% initiated smoking before; 88% were willing to quit smoking. These findings provide baseline information for designing and implementing a comprehensive smoking cessation program that considers the needs of PWH in Jamaica, with the potential of becoming a replicable model for other HIV-specialized healthcare settings in the Caribbean.

Factors associated with blood mercury concentrations and their interactions with three glutathione S-transferase genes (GSTT1, GSTM1, and GSTP1): an exposure assessment study of typically developing Jamaican children.

BACKGROUND: Jamaican soil is abundant in heavy metals including mercury (Hg). Due to availability and ease of access, fish is a traditional dietary component in Jamaica and a significant source of Hg exposure. Mercury is a xenobiotic and known neuro-toxicant that affects children's neurodevelopment. Human glutathione S-transferase (GST) genes, including GSTT1, GSTM1, and GSTP1, affect Hg conjugation and elimination mechanisms. METHODS: In this exposure assessment study we used data from 375 typically developing (TD) 2-8-year-old Jamaican children to explore the association between environmental Hg exposure, GST genes, and their interaction effects on blood Hg concentrations (BHgCs). We used multivariable general linear models (GLMs). RESULTS: We identified the child's age, consumption of saltwater fish, canned fish (sardine, mackerel), string beans, grain, and starches (pasta, macaroni, noodles) as the environmental factors significantly associated with BHgCs (all P < 0.05). A significant interaction between consumption of canned fish (sardine, mackerel) and GSTP1 in relation to BHgC using either a co-dominant or recessive genetic model (overall interaction P = 0.01 and P < 0.01, respectively) indicated that consumption of canned fish (sardine, mackerel) was significantly associated with higher mean BHgC only among children with the GSTP1 Ile105Val, Ile/Ile [Ratio of mean Hg (95% CI) = 1.59 (1.09, 2.32), P = 0.02] and Ile/Val [Ratio of mean Hg (95% CI) = 1.46 (1.12, 1.91), P = 0.01] genotypes. CONCLUSIONS: Since this is the first study from Jamaica to report these findings, replication in other populations is recommended.

The Aplastic Crisis in HbSS: Observations from the Jamaican Birth Cohort.

In order to document the prevalence, clinical features, hematology and outcome of the aplastic crisis in homozygous sickle cell disease (HbSS), a cohort study has been conducted from birth. Newborn screening of 100 000 deliveries at the main government maternity hospital, Kingston, Jamaica between 1973 and 1981 detected 311 cases of HbSS who have been followed at the Medical Research Council Laboratories at the University of the West Indies, Kingston, Jamaica. Clinically defined aplastic crises occurred in 118 (38%) patients at a median age of 7.5 years (range 0.5-23.0 years). All but one event seroconverted to parvovirus B19, the exception being a 9.3 year male with classic aplasia but subsequent IgG did not exceed 3 IU. Defined by zero reticulocyte counts, 94 patients presented with a median hemoglobin of 3.7 g/dL (range 18-87 g/L) representing a median fall from steady state levels of 3.8 g/dL. Clear epidemic peaks occurred at 1979-1980, 1984-1986, and 1990-1993 and the admission rate and use of blood cultures fell with each epidemic, reflecting increased familiarity with the complication. Symptoms were usually nonspecific and all but 7 were transfused. No patient had a recurrence and two died from aplasia (one with remote rural residence and the other following an incorrect diagnosis). Of those seroconverting to parvovirus B19, 68% manifested aplasia and 24% had no hematologic change. Correctly diagnosed and managed, the aplastic crisis is essentially benign. (230 words).

Poor Sleep Quality in Jamaican Adults With Sickle Cell Disease: Prevalence, Risk Factors, and Association With Quality of Life.

Poor sleep and chronic illnesses have a bidirectional relationship where presence of one can worsen the other. Sickle cell disease (SCD) is associated with significant morbidity and early mortality. In this study, we examine sleep quality, its predictors, and its association with quality of life in Jamaican adults with SCD. This cross-sectional study evaluated 177 well adult SCD patients for sleep quality using The Pittsburgh Sleep Quality Index (PSQI) and quality of life using the Adult Sickle Cell Quality of Life Measurement Information System (ASCQ-Me). Multiple linear regression models examined the predictors of poor sleep quality. The mean global PSQI score was 6.9 (SD 4.2) with 56.5% having poor sleep quality. Women had significantly worse scores for sleep efficiency (p 0.005), sleep latency (p 0.03) and higher use of sleeping medications (p 0.02). Those overweight/obese had significantly worse subjective sleep quality (p 0.001) and sleep efficiency (p 0.05). In multivariate regression analysis, overweight individuals had poorer sleep quality (OR: 2.9; 95% C.I.: 1.07, 7.88) than those with normal weight whereas those unemployed and looking for a job had lower prevalence of poor sleep quality (OR 0.2; 95% C.I.: 0.05, 0.77) compared to employed individuals. Participants with good sleep quality had significantly better functioning in all 5 domains of the ASCQ-Me. In conclusion, persons with SCD who are overweight or obese are at increased risk of poor sleep which can negatively affect quality of life. Patient populations and healthcare providers will need to manage the emerging burden of overweight/obesity.

Epidemiology of violence against young children in Jamaica.

Violence against young children is known to have detrimental short and long-term effects. Yet, few studies investigate the prevalence of violence against young children, particularly very young children under the age of 2 years. This paper reports on the prevalence of violence against young children in Jamaica using data obtained from the JA KIDS birth cohort study that undertook pre-enrolment of pregnant mothers in the antenatal period and followed full or sub-samples of parents and children at 9-12 months, 18-22 months and 4-5 years. Violence in pregnancy was experienced by 6.1% of pre-enrolled mothers. As many as 43.1% of Jamaican children ages 9-12 months were shouted at, and almost 30% were slapped. Physical and emotional violence increased with age, and by 4-5 years, approximately 90% of children experienced physical and emotional violence. Non-violent methods, primarily explaining and reasoning with children, were also reported by more than 95% of parents at 4-5 years. Corporal punishment was the most common form of violence experienced, but young children also witnessed hurtful physical and emotional violence between mothers and their partners and lived in communities in which there were violent events. Strategies to reduce young children's experiences as victims and witnesses of violence are discussed.

Does household size matter? Crowding and its effects on child development.

There is very little compelling evidence that household size negatively affects child development. In this study, the effects of household size on child development were analysed using data collected for a sample of 1311 four-year-old Jamaican children. Children's development was assessed using the Griffiths Mental Development Scales across six developmental domains: locomotor, personal-social, language, coordination, performance and practical reasoning. The findings suggest that children's locomotor and personal-social development are negatively affected by household crowding, with no significant effects observed for other domains. Additional results show that these adverse effects are strongest if the child lives in a single room compared to a separately detached house. This evidence speaks to the need to tailor policies towards access to good housing infrastructure and the provision of recreational spaces to encourage play and social interaction among children.

JA KIDS - Jamaica's second national birth cohort study: aims and methods.

Birth cohort studies across the world have yielded information that has been used to inform policy and programme decisions that have improved the health and well-being of populations. A few such studies have been conducted in low- and middle-income countries due to funding, methodological and other challenges. This paper briefly reviews the methods of comprehensive birth cohort studies with extensive follow-up of participants through the life course conducted in low- and middle-income countries. It then reviews the first Jamaican birth cohort study of 1986 and discusses the methodological advances in implementing JA KIDS, the second Jamaican birth cohort study conducted in 2011. The aims and methods of JA KIDS are described in detail.

Factors Affecting Age of Initial Specialty Clinic Evaluation Among Infants with Sickle Cell Disease in Kingston, Jamaica.

OBJECTIVES: To evaluate the effectiveness of newborn screening for sickle cell disease in eastern Jamaica by determining what proportion of screen-positive infants were registered with the Sickle Cell Unit by 2 months (60 days) of age and identifying parents' perceptions of facilitators and barriers impacting age at registration. STUDY DESIGN: This cross-sectional study used a mixed method approach. Ages at diagnosis confirmation and first clinic visit were recorded for screen-positive infants born between February 1, 2015, and November 15, 2017. All parents were invited to complete the survey, and early and late attendees were invited to participate in the qualitative aspect of the study. A researcher-designed questionnaire and an interview guide based on the Capability, Opportunity, Motivation, Behavior, and health belief models examined factors that may affect time to registration. Quantitative data were analyzed to yield descriptive statistics using Stata®v14. All interview data were coded. Similar codes were grouped together into themes. RESULTS: Most (97.7%) of the 133 screen-positive infants had their diagnosis confirmed. Only 40% had their first clinic visit by age 60 days. Denial of the diagnosis, poor communication, and the costs of treatment and transportation were perceived barriers to registration, whereas family support was a facilitator. CONCLUSIONS: Diagnosis confirmation was almost universal, but most infants did not attend clinic by 2 months of age. In-depth interviews have identified several facilitators and barriers that can be targeted to improve early registration.

H. pylori predictors and outcomes among adults undergoing upper endoscopy at a Jamaican teaching hospital: A cross-sectional study.

BACKGROUND: Recent data on the prevalence of H. pylori infection in Jamaica are lacking. It is postulated that there has been a decline in the prevalence of H. pylori infection and its associated complications. We determined sociodemographic characteristics, prevalence of H. pylori infection and clinical outcomes among adults undergoing esophagogastroduodenoscopy (EGD) and histology at the University Hospital of the West Indies (UHWI) between May 2018 and December 2020. MATERIALS AND METHODS: A cross-sectional study of patients (≥18 years old), who underwent EGD and histological evaluation for H. pylori infection, was conducted. Associations of H. pylori positivity and gastric cancer with sociodemographic/clinical variables and endoscopic findings were determined by stepwise logistic regression using backward selection. Unadjusted and adjusted odds ratios with related 95% confidence intervals (Cis) were calculated for H. pylori positivity and gastric cancer status. RESULTS: There were 323 participants (mean age 58.6 ± 17.8 years, 54.2% females). H. pylori prevalence was 22.2% (n = 70 of 315), 5.6% had gastric neoplasia (GN), 15.5% gastric atrophy, 11.4% intestinal metaplasia and 3.7% dysplasia on histology. Mucositis (64.5%), gastric ulcer (14.9%), and duodenal ulcer (13.9%) were the most common endoscopic findings. Participants with peptic ulcer disease (PUD) (unOR = 4.0; p = .017), gastric cancer (unOR = 9.5; p = .003), gastric atrophy (unOR = 12.8; p < .001), and intestinal metaplasia (unOR = 5.0; p < .001) had a significantly higher odds of being H. pylori positive, but after multivariable analyses only gastric atrophy remained significant (aOR = 27.3; p < .001). Participants with mucositis had a significantly lower odds of gastric cancer (unOR 0.1; p = .035) while participants with dysplasia had significantly higher odds (unOR 8.0; p = .042), but these were no longer significant after multivariable analyses (aOR = 0.2; p = .156 and aOR = 18.9; p = .070, respectively). CONCLUSIONS: Histology based prevalence of H. pylori infection is lower than previously reported in Jamaica. Gastric atrophy is a significant predictor of H. pylori positivity.

Situating commercial determinants of health in their historical context: a qualitative study of sugar-sweetened beverages in Jamaica.

BACKGROUND: Non-communicable diseases (NCDs) are the leading cause of mortality across the Caribbean and similar regions. Structural determinants include a marked increase in the dependency on food imports, and the proliferation of processed foods, including sugar-sweetened beverages (SSBs). We focused on Jamaica as a case study and the health challenge of SSBs, and situated contemporary actions, experiences and policies within their historical context to investigate underlying drivers of commercial determinants of health and attempts to counter them. We asked: how can a historical perspective of the drivers of high level SSB consumption in Jamaica contribute to an enhanced understanding of the context of public health policies aimed at reducing their intake? METHODS: An ethnographic approach with remote data collection included online semi-structured interviews and workshops with 22 local experts and practitioners of health, agriculture and nutrition in Jamaica and attending relevant regional public webinars on SSBs and NCD action in the Caribbean. Our analysis was situated within a review of historical studies of Caribbean food economies with focus on the twentieth century. Jamaican and UK-based researchers collected and ethnographically analysed the data, and discussed findings with the wider transdisciplinary team. RESULTS: We emphasise three key areas in which historical events have shaped contextual factors of SSB consumption. Trade privileged sugar as a cash crop over food production during Jamaica's long colonial history, and trade deregulation since the 1980s through structural adjustment opened markets to transnational companies. These changes increased Jamaican receptiveness to the mass advertisement and marketing of these companies, whilst long-standing power imbalances hampered taxation and regulation in contemporary public health actions. Civil society efforts were important for promoting structural changes to curb overconsumption of SSBs and decentring such entrenched power relations. CONCLUSION: The contemporary challenge of SSBs in Jamaica is a poignant case study of commercial determinants of health and the important context of global market-driven economies and the involvement of private sector interests in public health policies and governance. Historically contextualising these determinants is paramount to making sense of the sugar ecology in Jamaica today and can help elucidate entrenched power dynamics and their key actors.

Industrially produced trans fat and saturated fat content of food products in Jamaica.

Objective: To estimate industrially produced trans and saturated fatty acid levels in foods within the Jamaican food system. Methods: A total of 308 commonly consumed foods were selected for analysis based on their potential to contain trans fatty acids. Samples were collected from supermarkets, convenience stores, and fast-food restaurants. Official methods of gas chromatography for the analysis of fats were used. The results were expressed as grams of fatty acid per 100 g of food sample and percentage of total fatty acids. Results: Total fat was found to exceed United Kingdom National Health Service (NHS) limits in 27.3% (n = 84/308) of food samples. About one-third (33.8%; n = 104/308) of commonly consumed foods in Jamaica contained varying levels of industrially produced trans fatty acids, while 7.8% exceeded the Pan American Health Organization limit of 2% of total fat. Industrially produced trans fatty acids were found in food categories such as canned meats, baked goods, cooking oils, condiments, breakfast cereals, desserts, dairy, spreads, snacks, and confectionery. The subcategories coconut oils and burgers had the highest mean content. Canned food, infant food, and pasta categories had no trans fat present. Saturated fats were found in almost all foods. Importantly, 32.5% (n = 100/308) of the foods had saturated fat concentrations higher than the NHS limit of 5 g per 100 g of food. Most of the food items with high levels of industrially produced trans fatty acids also contained high levels of saturated fats. Conclusions: Food products in Jamaica contain varying levels of fats that exceeded recommendations which support healthy consumption. Further exploration and reformulation efforts are needed to ensure that nutritional qualities are improved.

Telehealth: Navigating the COVID-19 Pandemic and Beyond: The Sickle Cell Unit Experience.

Introduction: To examine the use of telehealth for delivery of health care in persons with sickle cell disease in a resource-constrained country during the COVID-19 pandemic. Methods: This study was a retrospective review of patient encounters at the Sickle Cell Unit (SCU), Jamaica during a 3-year period, March 10, 2019 to March 9, 2022 and a comparison of endpoints between 1 year before and 2 years during the pandemic. Primary endpoints of registration numbers, day-care admissions, and study visits were obtained from logbooks and the electronic medical records. Additional endpoints included well visits, hydroxyurea (HU) visits, and bone pain crisis. Results: Patients registered at the clinic on 17,295 occasions, with 7,820 in the pre-pandemic year decreasing by 43.8% and 35% in the 2 subsequent pandemic years. Overall, study visits increased by 4.9% and 1.3% in the pandemic years. They increased in adults by 13.1% and 8.9% but fell by 3.2% and 6.2% in children. Fewer people were seen in the pandemic years, with children showing a 20.7% decline in numbers. Tele-visits accounted for 31.4% of all study visits during the pandemic years and increased by 23.6% between the pandemic years. There were more well-visits and HU visits, but fewer pain visits and day-care admissions in the pandemic years. Conclusions: The SCU maintained health care delivery for a high-risk population during the pandemic, with tele-visits mitigating the short-fall from in-person visits. Tele-visits may be more acceptable to adults with a chronic illness and may be a suitable alternative for delivering health care.

Antenatal Seroprevalence of Zika and Chikungunya Viruses, Kingston Metropolitan Area, Jamaica, 2017-2019.

To determine the extent of exposure to Zika virus (ZIKV) and chikungunya virus (CHIKV) in Jamaica, we collected serum from 584 pregnant women during 2017-2019. We found that 15.6% had antibodies against ZIKV and 83.6% against CHIKV. These results indicate potential recirculation of ZIKV but not CHIKV in the near future.

An assessment of the impact of 1.5 versus 2 and 2.5°C global temperature increase on flooding in Jamaica: a case study from the Hope watershed.

Climate change models project that, within the Caribbean basin, rainfall intensity is likely to increase toward the end of this century, although the region is projected to be drier overall. This may affect the frequency and severity of floods in Jamaica and the Caribbean Small Island Developing States. We investigate how flood hazards may be affected by increases in global mean surface temperature of 1.5, 2.0 and 2.5°C above pre-industrial levels using a case study of a Jamaican watershed. Rainfall projections from the PRECIS regional climate model for the Caribbean are analysed. Six members from the Quantifying Uncertainty in Model Predictions (AENWH, AEXSA, AEXSC, AEXSK, AEXSL and AEXSM) were used to create 100-year flood inundation maps for the Hope river for different global warming levels using hydrological and hydraulic models. Model runs projected peak discharges at 2.0, 2.5 and 1.5°C warming that were higher than discharges in the historical record of events that damaged sections of the watershed. Projections from the hydraulic model show increased flow area, depth and extent for 1.5 followed by 2.0 and 2.5°C rises in temperature. These results imply continued flood risk for the vulnerable areas of the watershed. This article is part of the theme issue 'Developing resilient energy systems'.

A Monte Carlo based approach to the resource assessment of Jamaica's geothermal energy potential.

The Eastern Caribbean chain of islands is commonly known to exhibit high-enthalpy systems for geothermal energy exploitation. The northernmost Caribbean Community member state of Jamaica possesses physical manifestations of 12 hot springs across the island. Previous investigations indicate that of the potential 12 hot springs, Bath, Windsor and Milk River springs have cogent geothermometry of their thermal fluids with estimated temperature ranges of (80-102°C), (128-156°C), and (158-206°C), respectively. The paper provides numerical findings for each geothermal system of interest and performs Monte Carlo simulations to optimize calculated findings. The determined quantitative findings are considered under the context of environmental savings and policy regime conditions for driving geothermal energy development. The three areas of interest are situated within the Rio Minho Basin, the Dry Harbour Mountains and the Blue Mountain South Basin. Through the consideration of a 25-year lifetime for production, a collective total of 94.81 MWe of geothermal power reserves can be absorbed into the national energy mix, displacing an estimated 0.38 million barrels of oil imports, resulting in approximately 0.44 million tonnes of carbon dioxide emissions being avoided per year. This article is part of the theme issue 'Developing resilient energy systems'.

Prevalence and sociodemographic factors associated with polysubstance use: analysis of a population-based survey in Jamaica.

BACKGROUND: In Latin America and the Caribbean, there is a dearth of research exploring polysubstance use. This study aims to determine the prevalence, varying combinations and associated sociodemographic characteristics of polysubstance use in Jamaica. METHODS: This study involved a secondary data analysis of the Jamaica National Drug Prevalence Survey 2016 dataset where 4,623 participants between the age of 12 and 65 years from each household were randomly selected as respondents. Statistical analysis was performed to determine the prevalence and the sociodemographic correlates of polysubstance use among Jamaicans. RESULTS: 19.6% of respondents used two or more drugs in their lifetime. Of this amount 68.7% reported past year use and 61.9% reported past month use. Bivariate analyses reported polysubstance use was statistically significantly higher amongst males (U = 54,579, p = 0.000), those living in rural areas (U = 91,892, p = 0.003), non-Christian (U = 89,514, p = 0.014), and married persons (U = 74,672, p = 0.000). Past month polysubstance use was statistically significantly higher among employed persons than unemployed persons were (U = 81,342, p = 0.001). Surprisingly, there was a lack of significant differences between education level, household income and past month concurrent polysubstance use (p = 0.609; p = 0.115 respectively). Logistic regression model indicated males were 3.076 times more likely than females to report past month polysubstance use than females. Also, when compared to those 55-65 years old, participants 35-54 years were 2.922 times more likely and those 18-34 years were 4.914 times more likely to report past month polysubstance use. Additionally, those living in rural areas were 1.508 times more likely than participants living in urban areas to report past month polysubstance use. As it relates to occupational status, when compared to armed forces, skilled workers were 4.328 times more likely and unskilled workers were 7.146 times more likely to report past month polysubstance use. CONCLUSIONS: One in five Jamaicans identified as polysubstance users, predominated by marijuana as the most common factor amongst the polysubstance combinations examined, signalling the need for early marijuana interventions.

Expenditures on sugar-sweetened beverages in Jamaica and its association with household budget allocation.

BACKGROUND: Sugar-sweetened beverages (SSB) consumption is associated with overweight and obesity, which are important drivers for the increasing healthcare and other social costs. If expenditures on SSB decrease expenditures on other goods and services, such as education and healthcare, this "crowding-out" may have a lasting effect. The main objectives of this article are, first, to estimate the statistical association between the decision of spending in SSB and several households' sociodemographic characteristics; and second, to estimate the association between the decision of buying SSB and budget allocation across categories in Jamaica. METHODS: Using the Jamaican Household Expenditure Survey 2004-2005 a generalized ordered probit model was estimated to examine the association between socioeconomic variables and the decision to spend on SSB. Seemingly Unrelated Regression Equations (SURE) of all the expenditure groups (except the SSB group) were used to estimate the association between the decision of buying SSB and budget allocation on other goods and services. RESULTS: Expenditures on SSB are negatively affected by the size of the household and the area of residence (rural households spend more on SSB than urban ones), while having a larger proportion of children (15 or younger) and having a larger total budget is associated to more expenditures on SSB. Households with positive expenditure on SSB allocate significantly less budget to "Healthcare" and "Education", when compared to those who did not buy SSB. CONCLUSIONS: SSB expenditures may displace expenditures in necessary goods and services, which implies that decreasing the proportion of budget spent on SSB may have important present and future consequences on poorer households' human capital accumulation and future incomes.

Concordance of the Deuterium Dose to Mother Method and 24-Hour Recall to Measure Exclusive Breastfeeding at 6 Weeks Postnatally in Rural/Urban Setting in Jamaica.

INTRODUCTION: The 2030 health agenda for the United Nations Sustainable Development Goals promote exclusive breastfeeding (EBF) for the first 6 months of life as a central step towards ensuring the survival of infants. As Jamaica attempts to achieve this goal, monitoring the rates of EBF is desirable. Currently, EBF rate is measured by questionnaires which are subject to recall and social desirability biases. We determined the rate of EBF using the Deuterium-oxide dose-to-mother (DTM) method and 24-h recall. The concordance of both methods and urban-rural differences of EBF were evaluated. Additionally, the growth of infants who were exclusively breastfed was compared to the infants who were mixed-fed. METHODS: Sixty-one healthy mother-child pairs were followed from birth. EBF was measured at 6 weeks. Growth was determined using standard anthropometric measurements. Differences in means were assessed by independent t-test or ANOVA. The agreement between the DTM and 24-h recall method was assessed with the kappa statistic. Differences in anthropometry and location were determined using a repeated measure model approach. RESULTS: Thirty (49%) women exclusively breastfed their infants with mean breast milk intake of 1024.3 ± 256.9 g/day. There was moderate agreement between the methods (Agreement 69%, kappa 0.37, p = 0.002). Rural women (65%) were more likely to practice exclusive breastfeeding. There was no significant difference between the growth of the exclusively breastfed infant and mixed-fed infants. CONCLUSION: EBF rate was successfully measured using the DTM method. Women from urban settings are less likely to practice EBF. Further research may be needed to gain an in-depth understanding of the factors affecting breastfeeding practices in urban Jamaica.