World health statistics quarterly. Rapport trimestriel de statistiques sanitaires mondiales
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World Health Stat Q · Jan 1988
The global impact of noncommunicable diseases: estimates and projections.
With the aging of populations in developing countries there is both a demographic and an epidemiological transition which affects the impact of chronic degenerative diseases on the health status of the populations. Demographic transition takes place in countries where there are effective programmes of disease control which allow for survival during the early years of childhood and adolescence. This results in an increase in life expectancy which places larger proportions of the population in the age range (60 years and older) in which chronic degenerative diseases become the major determinants of health status. ⋯ The major differences are seen to be in the proportions of deaths expected from such diseases as cancer, diabetes, heart disease, stroke and cirrhosis; but not in the distribution of age at death which is the better measure of disease impact. Demographic analyses, computing indirect estimates of mortality, also demonstrate that there are currently more chronic disease deaths in developing than developed countries and that as expectation of life increases in developing countries the global chronic disease burden will be greatly concentrated in the developing countries. Analyses of risk-factor reduction by feasible intervention strategies, e.g. smoking cessation campaigns, treatment of high blood pressure, using relationships between risk factors and diseases established in longitudinal studies carried out in developed countries, point out that the effect of risk-factor control in long-living populations can be hidden by the dependency of risk factors and various related causes of death, e.g. smoking has an impact on lung cancer, ischaemic heart disease and emphysema, but at different ages.(ABSTRACT TRUNCATED AT 400 WORDS)
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World Health Stat Q · Jan 1988
Integrated programme for noncommunicable diseases prevention and control (NCD).
In spite of the difference between developed and developing countries, health conditions change in a predictable pattern: the mortality and morbidity rates caused by infectious diseases decline while the rates related to non-infectious pathology increase. Taking into account the increasing importance of noncommunicable diseases, the majority of countries are developing a set of disease-oriented (cancer, cardiovascular diseases, diabetes, etc.) prevention and control programmes as well as factor-oriented programmes such as anti-smoking, alcohol abuse and nutrition. ⋯ The four main directions being developed for the realization of this programme are: experimental testing, mathematical modelling, training activity and research development: At present WHO headquarters: has established 18 demonstration projects in 15 countries for experimental testing of different intervention programmes; is collecting mathematical models for prediction of efficacy and effectiveness of different alternatives and scenarios; is developing different types of training courses; is investigating the competing risk among noncommunicable diseases and time lag for different intervention programmes, etc. In order to develop all these directions many collaborating centres are participating, and close cooperation with some nongovernmental organizations has been established.(ABSTRACT TRUNCATED AT 250 WORDS)
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Population surveys carried out since the 1970s in 15 developing countries including 23 population groups show that the prevalence of hypertension ranges from as low as 1% in some African countries to over 30% in Brazil. A trend analysis of the mortality statistics for 35-74 year-olds from 16 countries in which data are available shows a downward trend in mortality from hypertension and cerebrovascular diseases in most of these countries. In spite of the current low prevalence in some countries, the total number of hypertensives in the developing world is high, and a cost assessment of possible antihypertensive drug treatment indicates that developing countries cannot afford the same drug treatment levels as developed countries.
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Anthropometry (the use of body measurements to assess nutritional status) is a practical and immediately applicable technique for assessing children's development patterns during the first years of life. An evaluation of their growth also provides useful insights into the nutrition and health situation of entire population groups. Anthropometric indicators are less accurate than clinical and biochemical techniques when it comes to assessing individual nutritional status. ⋯ Intercountry trend comparisons are difficult for two main reasons. Firstly, the time between surveys is occasionally different and, secondly, despite efforts to standardize data analysis and presentation, different cut-off points have been used to calculate prevalence figures and estimate the extent of undernutrition. However, the use of identical cut-off points is not essential for making intercountry trend analyses since it is the general trends in growth deficit and nutritional status over time which are being evaluated.(ABSTRACT TRUNCATED AT 400 WORDS)