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Epidat 2.0 is a software package for use by epidemiologists and other health professionals who habitually manage tabulated data. Its objectives are to complement other statistical software packages that utilize databases and to provide an instrument to facilitate and support the teaching of epidemiology. This second version is a Windows® application and consists of the following modules: Rate adjustment. - This software makes it possible to introduce the data manually or import them in .DBF format. As many rates as the user desires may be adjusted simultaneously, either directly or indirectly. Sampling. - It calculates the minimum sample size for estimates of prevalences and means, case-control, and cohort studies, and verification of the quality of batches. It also generates pseudorandom numbers. Agreement. - It analyzes the agreement between two or more observers, with two or more classification categories. It also contrasts kappa equality hypotheses.
Tables. - It analyzes 2x2 tables from cross-sectional, case-control, or cohort studies in simple or stratified tables. In paired case-control studies it permits up to four controls per case. It incorporates the Bootstrap method for calculating confidence intervals. It makes specific calculations in MxN tables if the categories are ranked. It incorporates the Chandra-Sekar-Deming capture-recapture method and the Knox method for cluster detection. Diagnostic tests. - It calculates the sensitivity, specificity, and predictive values of simple, serial, and parallel diagnostic tests. In combined tests it makes the calculations if it has either the cell values or the sensitivity and specificity values of each test. It makes it possible to produce ROC curves, calculating the area under the curve and the optimal cut-off point if the prevalence and cost ratio are known. Inference. - It makes it possible to contrast equality of averages and proportions hypotheses with one or two dependent or independent samples and to calculate confidence intervals. Prioritization. - It proposes a simple method for the determination of health priorities (CENDES/PAHO), based on user-defined indicators and areas. Epidat 2.0 is a freely-distributed program developed by public institutions. Consequently, dissemination is not only permitted, but encouraged, together with any criticisms or observations that may help to improve future versions. Program developed by the Servicio de Información sobre Saúde Pública de la Consellería de Sanidade and Servicios Sociais de la Xunta de Galicia and the Program on Health Situation Analysis (HDP/hda) of the Pan American Health Organization, PAHO. For more information, contact:
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