Public policy and female sterilization in Costa Rica

For 20 years, female sterilization has been increasing in popularity as a contraceptive method in Costa Rica. However, contraceptive sterilization has never been allowed explicitly under Costa Rican law. In 1976 the Costa Rican National Assembly instituted more stringent guidelines regarding medical sterilizations in order to eliminate contraceptive sterilizations, which had been occurring under relatively loose interpretations of national policy. Data from the 1976 National Fertility Survey and the 1981 Contraceptive Prevalence Survey indicate that the change in policy had only a short-term effect. Period sterilization rates fell substantially after 1976 but rebounded considerably by 1980, and the estimate of the proportion of married women who will ultimately be sterilized was approximately .5 for the periods both before and after 1976.     

Costa Rica: achievements of a heterodox health policy

Costa Rica is a middle-income country with a strong governmental emphasis on human development. For more than half a century, its health policies have applied the principles of equity and solidarity to strengthen access to care through public services and universal social health insurance. Costa Rica's population measures of health service coverage, health service use, and health status are excellent, and in the Americas, life expectancy in Costa Rica is second only to that in Canada. Many of these outcomes can be linked to the performance of the public health care system. However, the current emphasis of international aid organizations on privatization of health services threatens the accomplishments and universality of the Costa Rican health care system.     

Neurobrucellosis in stranded dolphins, Costa Rica

Ten striped dolphins, Stenella coeruleoalba, stranded along the Costa Rican Pacific coast, had meningoencephalitis and antibodies against Brucella spp. Brucella ceti was isolated from cerebrospinal fluid of 6 dolphins and 1 fetus. S. coeruleoalba constitutes a highly susceptible host and a potential reservoir for B. ceti transmission.     

Concepts of iron deficiency anemia and public health measures in rural Costa Rica

In rural Costa Rica, lay people conceptualize iron deficiency anemia differently from health care providers, and these differences impede public health initiatives. This research is based on 70 ethnographic interviews with mothers of young children 24-48 months of age and interviews with health care personnel in eight rural neighborhoods. Lay explanations of anemia draw on biomedical concepts, such as the amount of iron in the blood or in food, but one common explanation is elaborated to involve a biomedical life-threatening disease, leukemia, in cases where the anemia is not treated. Furthermore, mothers often view the liquid iron given free at the clinic as treatment for anemia as too strong, causing negative dental effects; many refuse to administer the iron drops to their children and give other treatments. Formal public health measures result in effects local people consider unacceptable and not congruent with being a good parent; with few exceptions, the medical community dismisses those preoccupations as inappropriate signs of ignorance on the part of caretakers. The existence of several systems of healing allows for parental rejection of public health measures and easy access to alternative remedies.     

Building bridges between research, policy and practice in public health

The article examines core elements of the national and international discussion on the required integration between research, policy and practice in public health, and provides input for this integration. Some conceptual barriers and other barriers at different spheres that interfere with the desired integration are discussed. Evidence has shown that research, policy and practice in health are not continuous, homogenous areas but rather involve different levels and actors. Their processes develop in different grounds supported by a variety of actions, paradigms and interests that are not conflict-free. Thus, this integration is a major challenge given its complexity and multiplicity of objective and subjective aspects.     

B vitamins and plasma homocysteine concentrations in an urban and rural area of Costa Rica

OBJECTIVE: We studied the association between total plasma homocysteine (tHcy) concentrations and folate, B(12), and B(6) status in the urban and rural areas of Costa Rica. Subjects and Methods: We determined plasma tHcy concentrations and assessed dietary folate, B(12) and B(6) intake by a food frequency questionnaire in 462 subjects selected by stratified random sampling in the urban and rural areas of Puriscal, Costa Rica. Plasma folate and vitamin B(12) concentrations were measured in women. RESULTS: THcy concentrations were higher (p < 0.01) in the rural compared with the urban area: 12.0 micro mol/L vs. 8.9 micro mol/L in men, and women 7.3 micro mol/L vs. 5.5 micro mol/L in women, respectively. The prevalence of hyperhomocysteinemia (greater than 15.0 micro mol/L) was twice as high in rural compared with urban men (19.8% vs. 10.8%, p = 0.06) and women (6.6% vs. 3.4%, p = 0.26). Most study subjects (98%) had folate intakes that were less than the recommended 400 micro g/day. In women, 31% of those living in the urban area and 40% of those in the rural area had plasma folate concentrations of less than 6.8 nmol/L, an indicator of folate deficiency. In women, age-adjusted mean tHcy concentrations ( micro mol/L) were higher in the lowest compared with highest quintiles for dietary vitamin B(6) (9.9 vs. 5.4, p < 0.05), B(12) (9.2 vs. 4.9, p < 0.01), and folate (7.0 vs. 5.7, p = 0.87). Similar results were found for plasma B(12) (9.9 vs. 5.4, p < 0.01) and folate (10.5 vs. 5.0, p < 0.0001). CONCLUSIONS: Residents of the rural area in Puriscal, Costa Rica have higher plasma concentrations of tHcy and lower intake of B vitamins, particularly in women. Because these characteristics are associated with high risk of cardiovascular disease, the efficacy of food fortification program in rural areas should be carefully addressed.     

Infant mortality in Costa Rica: explaining the recent decline

Costa Rica has undergone a dramatic reduction in its infant mortality rate from 68 per 1,000 live births in 1970 to 20 per 1,000 in 1980. In the present study, changes during this century, mortality differentials, and causes of death are analyzed, and multiple regression techniques are used to identify the determinants of the decline in Costa Rica's 79 cantons (counties). Although socioeconomic development and greatly reduced fertility contributed to the infant mortality decline, as much as three-fourths of the decline is attributable to public health programs implemented during the 1970s. The extension of primary health care--especially rural and community programs--seems to be responsible for 40 percent of the reduction. In addition, health services produced a notable decrease in the socioeconomic differentials related to children's risk of death. The unique achievements of this developing country offer a new strategy for public health improvement.     

An oral poliovirus vaccine trial in Costa Rica,

Early in the course of the 1959 nationwide oral poliovirus vaccination campaign in Costa Rica, a small, special and intensive study of oral vaccination was initiated there by the Yale Poliomyelitis Study Unit. The aims were to determine the effectiveness of vaccination, as measured by the rate of antibody conversions and antibody rises induced by the trivalent Lederle oral vaccine when given in two doses to a population of young children living in a tropical environment; to determine the prevalence of non-poliovirus enteroviruses in this juvenile population and their possible inhibitory effects upon the attenuated poliovirus vaccine strains; and to determine the duration of virus excretion by vaccinees and their young siblings, and the degree of intrafamilial spread of these viruses. It was also concerned with in vitro markers of the poliovirus strains recovered after one or two human passages; and, finally, dealt with the extent to which polioviruses could be recovered from flies trapped within the study area before and during the vaccination trial. Considerable knowledge was gained regarding the epidemiological problems which the use of oral vaccines entail.     

Childhood leukaemia in Costa Rica, 1981-96

Childhood leukaemia incidence in Costa Rica during 1981-96, among the highest in the world, was analysed by histology, gender, birth year, time period of diagnosis, age at diagnosis and region. Numbers of cases were extracted from the database of the National Cancer Registry (RNT) of Costa Rica. Person-years at risk were calculated from census data and post-census population estimates. During the follow-up, 918 cases of leukaemia in children under 15 years (510 boys, 408 girls) were reported to the RNT (41% of all childhood malignancies), with an overall age-standardised incidence rate of 56 per million person-years. Acute lymphocytic leukaemia (ALL) represented 79% and acute non-lymphocytic leukaemia (ANLL) 16% of the cases, with rates of 43 and 9 per million person-years respectively. There were downward trends in incidence of total leukaemias, ALL and ANLL and 'not otherwise specified' (NOS) combined. Incidence of ALL was highest at 1-4 years of age in boys and girls, whereas ANLL peaked in girls during the first year of life. During 1991-96, the decrease in ALL was significant (P = 0.042). A multivariable Poisson regression model identified significant excesses of ALL for boys, for age groups 1-4 and 5-9 years and for three out of seven regions. Possible reasons for the high rates in Costa Rica are discussed.     

Health services privatization: the experiences of Chile and Costa Rica

This study questions the premises that justify the neoliberal privatization of financing, managing and delivering health services. It also analyses the meaning of privatization and its strategies. We compare privatization in Chile and Costa Rica and suggest that the more limited, selective and locally designed privatization process in Costa Rica has resulted in a more equitable, and efficient health system than the imported privatization model introduced in Chile. The Costa Rican system also produces greater patient satisfaction and at the same time preserves the solidarity principle.     

Workplace carcinogen and pesticide exposures in Costa Rica

The CAREX data system converts national workforce volumes and proportions of workers exposed to workplace carcinogens into numbers of exposed in 55 industrial categories. CAREX was adapted for Costa Rica for 27 carcinogens and seven groups of pesticides. Widespread workplace carcinogens in the 1.3 million workforce of Costa Rica are solar radiation (333,000 workers), diesel engine exhaust (278,000), environmental tobacco smoke (71,000), hexavalent chromium compounds (55,000), benzene (52,000), wood dust (32,000), silica dust (27,000), lead and inorganic lead compounds (19,000), and polycyclic aromatic compounds (17,000). The most ubiquitous pesticides were paraquat and diquat (175,000), mancozeb, maneb, and zineb (49,000), chlorothalonil (38,000), benomyl (19,000), and chlorophenoxy herbicides (11,000). Among women, formaldehyde, radon, and methylene chloride overrode pesticides, chromium, wood dust, and silica dust in numbers of exposed. High-risk sectors included agriculture, construction, personal and household services, land and water transport and allied services, pottery and similar industries, woodworks, mining, forestry and logging, fishing, manufacturing of electrical machinery, and bar and restaurant personnel.     

Starchy Vegetables and Metabolic Syndrome in Costa Rica

Only a few studies primarily examined the associations between starchy vegetables (other than potatoes) and metabolic syndrome (MetS). We aimed to evaluate the association between starchy vegetables consumption and MetS in a population-based sample of Costa Rican adults. We hypothesized that a higher overall intake of starchy vegetables would not be associated with higher MetS prevalence. In this cross-sectional study, log-binomial regression models were used to estimate prevalence ratios (PRs) of MetS across quintiles of total, unhealthy, healthy starchy vegetables, and individual starchy vegetables (potatoes, purple sweet potatoes, etc.), among 1881 Costa Rican adults. Least square means and 95% confidence intervals (CIs) from linear regression models were estimated for each MetS component by categories of starchy vegetable variables. Higher intakes of starchy vegetables were associated with a higher prevalence of MetS in crude models, but no significant trends were observed after adjusting for confounders. A significant inverse association was observed between total starchy and healthy starchy vegetables consumption and fasting blood glucose. In this population, starchy vegetables might be part of a healthy dietary pattern.     

Health insurance and child mortality in Costa Rica

This study uses a natural experiment approach to evaluate the effect of health insurance on infant and child mortality. In the 1970s Costa Rica adopted national health insurance, which expanded children's insurance coverage from 42 percent in 1973 to 73 percent by 1984. Aggregate infant and child mortality rates dropped rapidly during this period, but this trend had begun prior to the insurance expansion, and may be related to other changes during this period. We use county-level vital statistics and census data to isolate the causal insurance effect on mortality using county fixed effects models. We find that insurance increases are strongly related to mortality decreases at the county level before controlling for other time-varying factors. However, after controlling for changes in other correlated maternal, household, and community characteristics, fixed effects models indicate that the insurance expansion could have explained only a small portion of the mortality change. These results question the proposition that health insurance can lead to large improvements in infant and child mortality, and that expanding insurance to the poor can substantially narrow socioeconomic differentials in mortality.