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At least 19 recordsLinked to original sources
PubMed1978

Assessment of surveillance and vital statistics data for monitoring abortion mortality, United States, 1972-1975.

To assess the usefulness of vital statistics and surveillance for monitoring abortion mortality, the authors compared data from two systems of classification: 1) deaths classified according to the underlying cause by the National Center for Health Statistics (NCHS) under the International Classification of Disease, Adapted (ICDA) code numbers 640-645 (abortion) for 1972-1975; and 2) abortion-related deaths reported to the Center for Disease Control (CDC) through its epidemiologic surveillance of abortion mortality for the same years. Vital statistics classifications dealing with the underlying cause of death are based on criteria defined by ICDA guidelines applied to all available information listed on death certificates, and exclude some deaths classified as abortion-related by CDC. Surveillance classifications are based on broader criteria developed by CDC for expanded data gathered by individual case investigation. Results showed that the surveillance techniques had identified more deaths as abortion-related and had resolved more cases into the specific abortion categories of legal, illegal, and spontaneous than vital statistics tabulations based on death certificates. The authors estimate that the surveillance system alone reported 88% of all abortion-related deaths, the vital statistics system 52%, and the two systems combined a total of 94%. Inadequate physician documentation on the death certificate was the primary reason vital statistics data contained a smaller number of reported abortion deaths than surveillance data.

Abortion, Illegal↗
PubMed1976

Annual summary of vital statistics-1975.

Data for this article, as in previous reports, are drawn principally from the Monthly Vital Statistics Report, published by the National Center for Health Statistics. The international data come from the Demographic Yearbook and the quarterly Population and Vital Statistics, both published by the Statistical Office of the United Nations, and the World Health Statistics Report, published by the World Health Organization. All the United States data for 1975 are estimates based upon a 10% sample of material received in state offices between two dates, one month apart, regardless of when the event occurred. Experience has shown that for the country as a whole the estimate is very close to the subsequent final figures. There are, however, considerable variations in a few of the states; state information should be interpreted cautiously.

Birth Rate↗
PubMed1979

On the estimation of relative risk from vital statistical data.

A method is described for the determination of a measure of relative risk from vital statistical data. If the frequency of disease in a population is linearly related to the level of exposure to a given factor, then a measure of the relative risk can be estimated from the slope and intercept of the regression line. For example, when the exposure is measured in terms of the proportion of the population exposed to the factor, then the relative risk is equal to (Formula: see text). This offers an indirect but simple and inexpensive method for estimating relative risk. It should be used with caution, particularly where confounding factors may be responsible for the apparent association between disease and factor. Applications of the method to estimate the relative risk of (a) circulatory diseases in women using oral contraceptives and (b) ovarian cancer in women with different average family sizes, both yielded relative risk estimates comparable with those obtained from case-control and prospective studies.

Cardiovascular Diseases↗