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"The paper starts with a brief analysis of the sources and the quality of the data and the mortality indices [for trends in adult mortality from chronic diseases in Chile]....A comparison is made of mortality among the 13 regions of the country and an attempt is made to relate the observed differences to some environmental and life-style factors. Rural-urban and educational differences of mortality by cause of death are also analyzed. The paper ends by comparing mortality by chronic disease in Chile with that of other countries of the Latin American region, noting some difficulties [in] such a comparison and proposing hypotheses for future studies." (SUMMARY IN ENG), (excerpt)

A methodological experiment was conducted as part of the Demographic and Health Surveys (DHS) project to determine whether different approaches to measuring the same variables would yield similar results. The experiment consisted of the use of a new questionnaire, incorporating variants of many of the traditional approaches to the collection of demographic and health data. The experimental questionnaire was applied in 2 countries, Peru and the Dominican Republic at the same time as the standard survey. The most salient feature of this new questionnaire pregnancies, contraceptive practice, and postpartum, marriage, employment, and migration information. In this paper, the authors evaluate whether the use of the calendar in the experimental questionnaire improved the quality of the resulting information on contraception in the DHS surveys from the abovementioned countries. Specifically, the author determine whether the monthly calendar led to better estimates of contraceptive prevalence, failure, and discontinuation, and discuss the advantages and drawbacks of the calendar over the more standard approach. Results from this evaluation suggest that the major advantages of the calendar over the more standard questionnaire are 3-fold: it allows for more complete reports of use for periods prior to the survey; it allows for a detailed study of contraceptive use patterns; and it obtains information which is more internally consistent with other types of information. On the bases of these findings, the DHS project will include a calendar in the new standard questionnaire to be used in the 2nd round of surveys (DHS II).

"The paper analyzes some problems related to the census measurement of internal migration according to the three following aspects: The lack of agreement between the proposed objectives and the type of question made; questionnaire design errors and enumeration errors; and inadequate data elaboration." The geographic focus is on Latin America. Problems concerning data on place of birth or place of previous residence and how these can affect the calculation of migration trends are considered. (SUMMARY IN ENG), (excerpt)

"A procedure is described to obtain an age distribution of emigrant surviving children from the reports of such children obtained from women by a census or survey. A simple form of the procedure, requiring a minimum of calculation, is shown to work almost as well as the more elaborate form, and is recommended for most uses. "These new procedures, explicitly introducing an age model of migration, yield age distributions which are substantially different from, and probably more realistic than those obtained through the use of model fertility and mortality schedules alone.... The age distributions of migrant children [in Colombia] as obtained in this paper are compared with those obtained by Somoza.... The procedure described here produces a total almost 10 percent higher because it shifts the age distribution of the migrant children towards higher ages with lower proportions of surviving mothers." (summary in ENG), (excerpt)

"During the latter part of 1986, national probability sample surveys of women of reproductive ages were carried out in... Peru and the Dominican Republic. These surveys were made as part of the Demographic Health Surveys project (DHS). In each country, one survey was conducted with the standard core questionnaire developed for DHS; the other survey was based on an experimental questionnaire. The major difference between the two questionnaires is the inclusion in the experimental one of a monthly calendar, which records pregnancies, contraceptive use, reasons for contraceptive discontinuation, breastfeeding, post-partum amenorrhea, post-partum abstinence, women's employment and place of residence for the period 1981-1986. This paper presents results from the first stage of the analysis of the Peruvian data: a comparison of basic characteristics of the two samples and an assessment of the completeness of reporting of recent births and infant and child deaths, i.e., a comparison of information in the truncated and full birth histories." (SUMMARY IN ENG), (excerpt)

"This paper describes the historical evolution of five populations and analyzes the circumstances under which data on maternal and paternal orphanhood of couples at the moment of marriage were collected and compiled." The data, which concern historical populations in Mexico, Chile, Peru, Brazil, and Argentina, are used to construct life tables for male and female adults. Consideration is given to mortality differentials by sex. (summary in ENG), (excerpt)

"This paper presents six indirect techniques for estimating the degree of death coverage as applied to vital statistics information in Venezuela between 1960 and 1982, collected by two public institutions, namely, the 'Oficina Central de Estadistica e Informatica' (OCEI) and the Ministry of Health and Social Assistance (MSAS).... The results show remarkable improvements in the death registry coverage for both institutions, that amount to 97 or 98 per cent at the beginning of the 80's. Nevertheless, great differences can be observed between them regarding both structure and volume of deaths by sex and age." Among the problems discussed are the impact of immigration and errors in age reporting. (SUMMARY IN ENG), (excerpt)