Prevalence of and factors associated with Helicobacter pylori infection in preschoolers in Havana, Cuba: A population-based study. / Prevalencia y factores asociados a infección por Helicobacter pylori en preescolares de La Habana, Cuba. Estudio de base poblacional.

INTRODUCTION: Helicobacter pylori (H. pylori) infection is usually acquired in childhood. In Cuba, its study in pediatric ages is a little explored field. AIM: To identify the prevalence of the infection and its associated risk factors in 3-year-old children in Havana. MATERIALS AND METHODS: An analytic, cross-sectional, epidemiologic analysis was conducted on 1,274 children belonging to the cohort of participants in the Natural History of Wheezing in Cuba study (HINASIC for its Spanish acronym) that were 3 years of age and provided a stool sample. H. pylori infection was identified by determining the H. pylori antigen (Ag) in stool, utilizing the commercial Spinreact kit, from Spain. The data were collected through a questionnaire applied by the researchers that included sociodemographic, environmental, and lifestyle variables, as well as infection from other parasites. Prevalence and the prevalence ratio with a 95% confidence interval were calculated and the dichotomous logistic regression analysis was employed. RESULTS: The prevalence of positive H. pylori Ag was 5%. Sleeping together was the risk factor found (PR:1.27; 95% CI: 1.03-1.50). Protective factors were drinking water from water delivery trucks (PR: 0.16; 95% CI: 0.04-0.72) and living in a nuclear family unit (PR: 0.94; 95% CI: 0.85-0.99). CONCLUSIONS: The prevalence of H. pylori infection in early childhood places Havana in an intermediate position at the international level. To control the infection, causal studies should be conducted and opportune interventions implemented.

What is the association between price and economic activity with cigarette consumption in Cuba from 1980 to 2014?

OBJECTIVES: Cuba is a tobacco-producing country that has been economically isolated as a consequence of an embargo imposed by the USA. It has also experienced a severe economic depression in the 1990s after the withdrawal of support by the former Soviet Union. These characteristics provide a unique opportunity to study the relation between large changes in economic activity, cigarette price and demand for cigarettes in a relatively isolated socialist economy. STUDY DESIGN: This is an observational epidemiological study. METHODS: Data were obtained on the annual price of a packet of cigarettes and the mean number of cigarettes consumed per adult living in Cuba from 1980 to 2014. Descriptive and regression analysis were used to explore the relationship between cigarette consumption and price in Cuba. RESULTS: In 1980, the mean price of a packet of cigarettes was 1.53 Cuban peso (CUP) in 1997 prices and the mean annual per capita consumption was 2237 cigarettes. In 2014, the mean price had increased to 5.57 CUP (1997 prices) per packet of cigarettes, and consumption had fallen to 1527 cigarettes per capita. There were significant negative associations between annual cigarette consumption and both price and living through an economic depression. The elasticity was approximately -0.31 with price, and living through an economic depression was also associated with lower consumption of cigarettes (a reduction of 9%, 95% confidence intervals -0.18 to -0.001). CONCLUSIONS: Higher cigarette pricing, along with other public health interventions, are required to protect the national population from the adverse effects of tobacco smoke exposure.

[Cuban epidemic neuropathy: the risk factors in the population]. / Neuropatía epidémica cubana: algunos factores de riesgo en la población.

A cross-sectional study was conducted in 1995 in a representative sample of the Cuban population aged 15 years or over with the objective of describing prevalence and characteristics of smoking, alcohol consumption, and physical inactivity in the urban population which could have been affected by epidemic neuropathy from 1991-1993. The sampling was stratified at provincial and municipal levels and then by cluster samplings. 93% of the sample was surveyed (14 300 people). 30% of the population aged 17 years and over smoked; the highest proportion of smokers was located in 40-49 years age group; men smoked more than woman regardless of age. The prevalence of alcohol consumption was 45.2% in which Eastern provinces exceeded the domestic average with males predominating. The prevalence of physical inactivity at national level was 33%, 25.7% for males and 39.8% for females. 47.3% of males and 25.4% of females classified as physically active because of their useful extra activity. It was considered that irregular relationships between these 3 risk factors and the incidence of epidemic neuropathy at the ecological level make it think that, although they have a real influence on the determinants of the disease, other factors may also better account for the occurrence of these cases.