Welcome to CDC WONDER — Wide-ranging ONline Data for Epidemiologic Research — an easy-to-use, menu-driven system that makes the Centers for Disease Control and Prevention’s (CDC) information resources available to public health professionals and the general public. It gives users access to a wide range of public health information.
CDC WONDER contributes to the CDC’s health promotion and disease prevention mission by facilitating and simplifying access to public health information for state and local health departments, the Public Health Service, and the academic and public health community. WONDER from the Centers for Disease Control and Prevention is helpful in public health research, decision-making, priority setting, program evaluation, and resource allocation.
The Centers for Disease Control and Prevention (CDC) developed CDC WONDER, an integrated information and communication system for public health. Its objectives are as follows:
To encourage information-driven decision-making by putting timely, valuable facts in the hands of public health practitioners and researchers and to give the general public access to specific and detailed information from the CDC.
You can do the following with CDC WONDER:
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Access CDC-published statistical research data, reference materials, reports, and guidelines on health-related topics; query numeric data sets on CDC computers using “fill-in-the-blank” web pages. Public-use data sets on mortality (deaths), cancer incidence, HIV and AIDS, tuberculosis, vaccinations, natality (births), census data, and a variety of other topics are available for query, and the requested data is easily summarized and analyzed using dynamically calculated statistics, charts, and maps.
The information is now ready for use in desktop applications such as word processors, spreadsheet programs, and statistical and geographic analysis software. Plain text (ASCII), web pages (HTML), and spreadsheet files are among the file formats available (Tab Separated Values). These services are menu-driven and do not require special computer knowledge.
Services provided by CDC WONDER include the following:
Communication is a marvel.
The cdc.gov website offers a single entry point to various reports and numerical public health data. The website is well-known throughout the public health community and is widely used in the curriculum of many public health schools.
WONDER online databases facilitate data dissemination, online data querying, analysis, visualization, and reporting for public health data collection. Following the CDC data release policy, CDC programs collaborate with CDC WONDER to provide external partners and the public access to their data. WONDER’s partners include programs from the CDC and other organizations.
WONDER online databases provide data and analysis to support evidence-based evaluation of public health programs and population health trends. CDC WONDER also includes the CDC Scientific Data Archives, a collection of CDC-produced scientific datasets and documentation.
WONDER web application: WONDER system software is available for public health programs and agencies. This public domain software is designed to run on any platform. The client is “thin” (HTML and internet connectivity). The web application was created using Java, XSL, and XML. Standard SQL queries must be supported by the data server, which can use flat or relational tables. Legacy data values are permitted because the design allows for value translation via metadata tables.
WONDER web service: The WONDER API for XML document exchange makes all WONDER online databases available via the WONDER web application software for automated web service data queries. This functionality aids in the creation of widgets and data mining. For more information, see WONDER API.
Web hosting: On the public-facing wonder.cdc.gov website, CDC WONDER hosts web applications developed by other CDC agencies.
Don’t hesitate to contact us to learn more about our services.
Overview of the CDC WONDER System
CDC WONDER provides a variety of health-related data sets. A series of menus allows you to query each data set.
A topic list or table of contents is used to present document collections such as the CDC Prevention Guidelines. In some cases, a full-text search option is also available.
A series of “fill in the blanks” request forms present statistical databases. You fill out the forms to specify the criteria for your data request and then submit it for processing. Your query’s results are usually returned within seconds. If the system takes too long to process your request, some queries allow you to retrieve your results later or have them e-mailed to you.
When you receive your results in CDC WONDER, you can view them online and, if desired, save them on your computer to load into another program. You can, for example, create charts or maps from your data and then paste these images into word processor documents or presentations. You may want to enter the information into a spreadsheet or statistical analysis program if you request numerical data. You can do this by clicking the “Export” button to generate a tab-separated file for download. Some software allows you to paste rows copied from a table displayed on a web page.
For more information, please see Data Sets and Documentation.
The CDC WONDER home page can be found on the internet at http://wonder.cdc.gov/. WONDER’s specific pages and forms are linked to various other websites.
Common characteristics include:
WONDER online databases include the following standard features:
Data query features have a consistent look and feel:
Select the “tab” at the top of any WONDER online database page to:
Request up to 5 cross-tabulations of data, such as national data broken down by state, county, age, race, and gender. Discover values within complex classification schemes, such as counties spanning multiple states.
The Results tab displays tables of summary statistics derived from your data query. Tables are organized or nested by data groupings, such as counties with state totals nested under the “parent” state.
Using the controls in the column headings, sort or move the columns.
To make additional changes, use the Quick Options and More Options buttons above the table, such as showing suppressed rows, row numbers, “high, medium, and low” data distributions, or setting custom break-points for data groups.
Click the Export button above the table to download the data as a tab-delimited text file.
Below are the results for context-sensitive caveats, the proper citation and a description of the query criteria.
Data should be charted for better visual analysis. You can select from a variety of chart styles, select independent and dependent variables, combine measures, and much more.
Map each data element, choose quantiles or custom break-points for data distributions, and display interstates, rivers, labels, and more. CDC WONDER and GATHER created maps for WONDER data query applications. GATHER is an acronym for Geographic Analysis Tool for Health and Environmental Research (GATHER), a product of the Geographic Research, Analysis, and Services Program (GRASP) at the National Center of Environmental Health (NCEH) / Agency for Toxic Substances and Disease Registry (ATSDR) at the Centers for Disease Control and Prevention (CDC).
Save the data from your request or results for later use. By clicking the “Save” button, you can save the current state of a Request, Results table, Chart, or Map. The system generates a unique URL that you can save and reuse to access the saved pages.
The About tab gives you quick access to the data description and source.
The logon requirement has been removed.
In August 2003, we retired all WONDER user accounts to make this public system more accessible to all public health and population health science researchers.
Pages of origin:
We have identified a list of WONDER system data queries on our home page. The comprehensive list of additional CDC web resources remains available; click on the Topics tab for a categorized list or the A-Z Index tab for an alphabetical list.
Search: Use the WONDER databases or the Scientific Data and Prevention Guidelines document collections to search.
Web Data Access Service
Using automated data queries in XML format over HTTP, you can immediately access data in the WONDER online databases for use in your web pages or widgets. WONDER API can be found here. To learn more, don’t hesitate to get in touch with us.
Documentation and data sets
WONDER from the Centers for Disease Control and Prevention is a powerful tool for retrieving and analyzing public health data. We strongly advise you to read the detailed data set documentation before using any data set to ensure that you understand the nature and limitations of the data sets. Don’t hesitate to contact CDC WONDER Customer Support if you have questions about a CDC WONDER data set.
All CDC WONDER data sets have summaries available here and on the CDC WONDER home page.
Comprehensive documentation for a given data set is available in the online help under the request screen for each data set.
Data Set Queries
CDC WONDER provides a variety of health-related data sets. A series of menus are used to query each data set. As the CDC works to make new data sources available and problems are encountered and resolved, the array of data sets available through CDC WONDER changes over time.
A topic list or table of contents is used to present document collections such as the CDC Prevention Guidelines. In some cases, a full-text search option is also available. On the WONDER website, these documents are pre-formatted and organized so you can access them immediately.
A series of “fill in the blanks” request forms present statistical databases. You fill out the forms to specify the criteria for your data request and then submit it for processing. Your request is routed to the appropriate database server on the CDC network behind the scenes.
Each data request form includes an entry for labelling or describing the query. This description appears on the returned results page and serves as the default filename if you “export” your data results to a tab-delimited file for download.
When you receive your results in CDC WONDER, you can view them online and, if desired, save them on your computer to load into another program.
If you retrieved a text document, you should open it in a word processor. You can save it as an ASCII text or html file in your browser’s “File” and “Save As” buttons and then load the file into your word processor.
If you requested numerical data, you might want to enter the information into a spreadsheet or statistical analysis program. The “Export” button appears above the data results in online databases. To download a tab-delimited file, click this button. For more information on importing the data into other applications, see Data Export Help.
Getting in Touch with CDC WONDER User Support
Click here to contact our customer support team for CDC WONDER support and technical assistance or to share your ideas and opinions. Contact us links appear at the top and bottom of most WONDER pages. Be as specific as possible when reporting a problem, and try to describe the steps you took before encountering the error. Take note of any error messages from CDC WONDER or your Web browser. The support representative may need to recreate the error, so be as detailed as possible.
Assume you have been asked by your nurse supervisor to review cancer statistics for your state and summarize for your department how they could be applied to your local community.
The CDC Wonder program can help public health workers manage trends by organizing data to make it consumable for program planning.
Explore the CDC Wonder program website to understand what data is available.
Select “Cancer Statistics” on the CDC Wonder page and then select “National Program of Cancer Registries 5-year Relative Survival.”
On the map, click on your state.
Review the “Top 10 Cancer Rates of New Cancer Cases” and “Top 10 Cancers by Rates of Cancer Deaths.”
Write a 500-word summary about how you might be able to use this data in your community. Include the following in your summary:
Top 3 types of cancer by rate
How you might use this data in your community or public health setting for each of the top 3 types of cancer