Parachute approach to evidence based medicine.
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Biomedical subjects
Publications and source records attributed to Ndola Prata.
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Community-based distribution (CBD) programs are the optimum way of reaching people in rural areas of developing countries where conventional methods of delivery do not exist or fail. This paper reviews findings and experiences from over 30 years of efforts to implement CBD of family planning methods around the world. Although research suggests that community-based service delivery can contribute to contraceptive use, the magnitude of impact is often in doubt or its existence is questionable when compared to alternative family planning delivery services. After the review of more than 30 years of CBD work, we found that these programs are still needed to meet the needs for contraception in rural communities and isolated city neighborhoods in developing countries. Integration with other health outreach programs, effective management, keeping training of agents brief and letting them distribute contraceptives and keeping all or part of the profits instead of paying them salaries are some of the strategies that can make CBD programs more efficient.
In much of the developing world, private health care providers and pharmacies are the most important sources of medicine and medical care and yet these providers are frequently not considered in planning for public health. This paper presents the available evidence, by socioeconomic status, on which strata of society benefit from publicly provided care and which strata use private health care. Using data from The World Bank's Health Nutrition and Population Poverty Thematic Reports on 22 countries in Africa, an assessment was made of the use of public and private health services, by asset quintile groups, for treatment of diarrhoea and acute respiratory infections, proxies for publicly subsidized services. The evidence and theory on using franchise networks to supplement government programmes in the delivery of public health services was assessed. Examples from health franchises in Africa and Asia are provided to illustrate the potential for franchise systems to leverage private providers and so increase delivery-point availability for public-benefit services. We argue that based on the established demand for private medical services in Africa, these providers should be included in future planning on human resources for public health. Having explored the range of systems that have been tested for working with private providers, from contracting to vouchers to behavioural change and provider education, we conclude that franchising has the greatest potential for integration into large-scale programmes in Africa to address critical illnesses of public health importance.
CONTEXT: The sexual behavior of young people in Angola will play a major role in the future spread of HIV, yet few young people use condoms consistently, and reported rates of condom use are low. It is important to identify determinants of condom use among Angolan adolescents and young adults. METHODS: Data for analysis came from 1,995 sexually experienced youth aged 15-24 who participated in a 2001 knowledge, attitudes and practices survey in Luanda, Angola. Logistic regression analysis was performed to identify predictors of consistent condom use by gender and determinants of condom use at last intercourse by type of relationship. RESULTS: For both males and females, consistent condom use was positively associated with higher levels of education (odds ratios, 1.7-2.6) and believing that condoms did not diminish sexual pleasure (1.8 for both genders). It was negatively associated with being married or in a cohabiting relationship (0.1-0.5). Females who equated condom use with lack of trust were less likely to use condoms consistently (0.5), and males who believed that condoms were safe and those who had multiple partners were more likely to be consistent users (1.6 and 1.7, respectively). Urban residence, higher education, being in school and not equating condom use with lack of trust were important predictors of use at last intercourse in regular and casual relationships, whereas access to condoms was the most important factor in spousal relationships (4.5). CONCLUSIONS: Intervention programs aimed at less educated, periurban and unemployed young people should be part of an effective HIV-prevention strategy. Such programs must address misperceptions among youth about condom use and the need for protection from HIV and other STIs.
High maternal morbidity and mortality in many developing countries are highly associated with poor access to and quality of health care. Here we review the economic feasibility of the WHO's mother-baby package as a means of reducing maternal and neonatal mortality and morbidity in Tanzania. This paper examines the costs of maternal health care in Tanzania, and how much can we expect households to contribute to these expenses, if the MBP were implemented. Using data from the Tanzanian 1993 Living Standard Measurement Survey (LSMS), we analyze responses from 757 women of reproductive age who have had a birth in the 12 months preceding the survey. We estimate current spending on maternal health care by different socio-economic groups and its share in relation to total household expenditures. Using logistic regression analyses, we examine the effect of the prices paid for maternal health care on the likelihood of using antenatal and safe delivery services, controlling for relevant socio-economic and demographic factors. Results show that if the MBP recovered 100% of its costs, most of the households would have to allocate more than half of their annual consumption on maternal health care. Poor socio-economic groups would experience the greatest increase in service utilization if MBP care were subsidized. In the face of scarce resources, subsidies should be targeted according to socio-economic group, in order to attain equitable and sustainable maternal health services.
This study arises from a general proposition that different levels and types of exposure to war are crucial in shaping health outcomes in a population under war-induced duress. We analyze civil war-related regional and ethnolinguistic differentials in age-adequate immunization (complete vaccination for age) and levels of malnutrition in Angola. Our analysis is based on data from a nationally representative survey conducted in 1996, some 2 years after the end of one of the most destructive periods of hostilities in the history of Angolan civil war. The data show that despite Angola's unique mineral wealth, the nation's levels of child age-adequate immunization is lower and malnutrition rates are higher than in most of sub-Saharan Africa. To examine age-adequate immunization and chronic malnutrition we fit logistic regression models that include the regional degree of war impact and ethnolinguistic group, in addition to rural-urban differences and other conventional sociodemographic characteristics. The tests reveal a significant disadvantage of rural children relative to urban children in both immunization and chronic malnutrition. Net of the rural-urban differences, we also detect a significant disadvantage of children residing in parts of the country that had been most affected by the fighting. The tests also point to a lower level of immunization and higher level of chronic malnutrition among children from the ethnolinguistic group commonly identified with the opposition. These associations tend to be stronger among children who were born and/or grew up during war than among children who were born after peace was re-established.
Using data from a nationally representative survey conducted in 1996, some two years after the end of a major outbreak of war, we examine the impact of war on the timing of recent births and war-related differences in reproductive preferences in Angola. We find evidence of a wartime drop and a postwar rebound in fertility, but these trends vary greatly, depending on the type and degree of exposure to war and on women's socioeconomic characteristics. At the same time, variations by parity are nonsignificant. In fertility preferences, the relative antinatalism of Angola's most modernized urban area stands out, but outside this area, differences between areas that were more and less affected by war are also noticeable. We offer interpretations of our findings and outline their implications for Angola's demographic future and demographic trends in similar settings.