The number of persons in whom AIDS will be diagnosed in the future can then be projected from the estimated HIV epidemic curve and the incubation period distribution The other was the development and widespread use of pharmacotherapy zidovudine During the mids, with the increasing availability of microcomputers, CDC epidemiologists first began using computers during field investigations, but no user-friendly software existed for the purpose. To remedy this problem, in the early s, CDC began development of Epi Info, a general-purpose computer program that could be used for epidemic investigations and surveillance Table.
- Medical Product Safety Evaluation: Biological Models and Statistical Methods - CRC Press Book!
- Flute Concerto in G Major - Flute.
- Mathematical Combinatorics (International Book Series), Vol. 3, 2008.
Early versions of Epi Info were used in field investigations on large "luggable" computers 23 Figure 3. The widespread distribution of Epi Info and the responsiveness of its developers to the needs of epidemiologists in the field drove the application of statistical methods in field investigations throughout the world Add to this countless other citations in reports not indexed, and the impact of its development on the field of statistics is apparent. In addition, Epi Info aided in early efforts to coordinate surveillance activities to reduce the workload of state health departments During this period, statistical methods for surveillance also advanced.
The availability of methods of forecasting by using time series methods augmented previous regression results 26, An investigation in response to food poisoning in Peru was the first documented field investigation to implement a time series analysis CDC, unpublished data, Use of these methods, developed during the s, was aided by the availability of computers that allowed computations to be conducted in a reasonable amount of time.
More broadly, methods were developed to investigate changes in patterns of surveillance data to aid in epidemic detection and control This development was further aided in , when the National Center for Health Statistics became part of CDC and brought its expertise in vital statistics and surveys Innovations continued during the s in such areas as the detection of statistical aberrations, and changes in patterns of data reported over time A Symposium on Statistics in Surveillance 34 became the foundation for ongoing CDC symposia on the statistics of cluster investigations 35 , statistics for rare events and small areas 36 , statistics as a basis for public health decisions 37 , emerging statistical issues 38 , complicated designs and data structures 39 , methods for decisions in uncertainty 40 , methods for addressing health inequities 41 , and use of multisource data Over time, these symposia were accompanied by short courses to educate the public health community about statistical methods In addition, CDC began giving awards for outstanding statistical work that had public health impact Figure 4.
Despite considerable achievements in reducing smoking prevalence as the 20th century closed, tobacco use remained responsible for one of every five U. The National Youth Tobacco Survey measured the tobacco-related beliefs, attitudes, and behaviors of youth and was the first to gather data from both high school and middle school students. Findings were used to design strategies for youth-focused antitobacco campaigns In , economic methods were used to measure smoking-attributable costs In , Anderson and May published Infectious Disease of Humans 47 , documenting their work in mathematical modeling transmission of infectious diseases, which was critically important to understanding the ongoing work in fighting the global HIV epidemic, as well as malaria and tuberculosis.
Subsequent work on modeling diseases has been used to monitor and model the impact of influenza outbreaks. During the s, laboratory techniques improved enough so that strains of viruses could be mapped and links made to the epidemiologic investigation. Although today the consequences of unhealthy dietary choices, sedentary lifestyles, and "supersized" food portions are familiar, during the late s, their potential for harm was underestimated. Research published in documented the nation's rapidly increasing obesity rates in all U.
CDC responded through VERB, an innovative and expansive campaign based on behavioral science theory and contemporary principles of marketing, which produced measurable positive results Once again, CDC epidemiologists were using statistical analytic methods that had previously been used in other disciplines.
For example, Bayesian methods used by businesses and marketers to model personal and community decision making preferences 50 or cluster analysis and marketing segmentation methods were being used to inform health intervention and evaluation of health programs Statistical methods in longitudinal analysis and mixed models used commonly in social research also contributed to the evaluation of results Likewise, a method developed in for studies in biological sciences, capture-recapture analysis, was adapted for evaluating surveillance systems 53, This method facilitated the estimation of total number of cases from two surveillance sources, each of which might not be complete.
In response to the terrorism events of , statisticians began to develop methods for use in defense and national security The rise of spatial statistics and geographic information systems meant that epidemiologists could better map prevalence data to suggest gaps in response or impact of disease or injury Economic data could be mapped for use in cost-effectiveness studies, and overlaying data types prevalence, economic costs, demographics could be used for better decision making and for evaluation of programs.
Mapping the cholera outbreak in John Snow's time seemed to have come full circle. Many of the techniques of spatial analysis depend on statistical measures and methods, including univariate statistical measures and directional analysis Additionally, statistical methods have been developed to address the specific needs of spatial datasets. The nature of these extensions differs from the ways in which multivariate statistics are derived from their univariate counterparts because of concepts of distance, direction, contiguity, and scale.
In the future, epidemiologists will continue to pursue new statistical techniques that can increase the impact of their analyses on public health. For example, the coming decades might bring innovations in new data collection modalities e. A large body of methods e.
Dr Roger Sapsford. Epistemology of Decision. Mario Graziano.
Recommended for you
Modern Analysis of Customer Surveys. Silvia Salini. Research Methods. Willie Tan. Surveys In Social Research.
David De Vaus. Assessing the Quality of Survey Data. Risk Tolerance in Financial Decision Making. The Social Psychology of Expertise. Harald A. Quantitative Social Research Methods. Kultar Singh. Information Quality and Management Accounting. Stephan Leitner. Willem E.
Handbook of Microsimulation Modelling. Cathal O'Donoghue. Techniques of Event History Modeling. Neuroscience and the Economics of Decision Making. Alessandro Innocenti. Data Science. Angela Montanari. Survey Data Collection and Integration. Cristina Davino. Quality of life in Italy. Filomena Maggino. Appraisal: From Theory to Practice. Pierluigi Morano. Statistical Methods and Applications from a Historical Perspective. Fabio Crescenzi.
- la Prostituée - Erotica français (French Edition);
- Statistical Methods for the Evaluation of University Systems.
- Official statistics - Wikipedia.
- Medical Product Safety Evaluation: Biological Models and Statistical Methods;
Studies in Theoretical and Applied Statistics. Poverty and Social Exclusion. Gianni Betti. Topics in Theoretical and Applied Statistics. Giorgio Alleva. Partial Least Squares Path Modeling. Richard Noonan. Population-Based Survey Experiments. Diana C. Research on PISA. Manfred Prenzel.
History of Statistics in Public Health at CDC, the Rise of Statistical Evidence
Psychological and Social Measurement. Mark Wilson. Donatella Vicari. Bruno D. Statistical Models for Data Analysis. Salvatore Ingrassia. Data Science and Social Research. Carlo Lauro. Field Experiments and Their Critics. Dawn Langan Teele. Statistical Methods for Spatial Planning and Monitoring. Silvestro Montrone. Looking Back. Neil J. New Frontiers in the Study of Social Phenomena. Federico Cecconi. Computerized Adaptive and Multistage Testing with R. David Magis.
Join Kobo & start eReading today
ICV 5. Posted: More Amjad D. Remember me. Individual and contextual determinants of inter-regional mobility in cancer patients. A generalized Birnbaum-Saunders distribution with application to the air pollution data. Some clarifications regarding power and Type I error control for pairwise comparisons of three groups.
The Gini coefficient and the case of negative values.