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Injury and Violence Prevention Program Just In Injury Prevention through the EMS and Trauma Care System Program Contacts - Technical Assistance |
As a courtesy to other publicly health entities, this page provides you the pieces so that you can produce InjuryRateAnalyzer workbooks using provided hypothetical data.* Though not absolutely necessary, having familiarity with Excel's Visual Basic Editor (VBE) is useful. The Three Needed PiecesProduction of an InjuryRateAnalyzer application takes three pieces:
An Injury DatabaseInjury data at WSDOH is contained in a computer running SQL Server in the form of a normalized database. This data base contains hospitalization and death record data, by individual. Within WSDOH, this data is made available for the "CreateRateAnalyzer.xls" (see below) using a series of SQL views that denormalizes and aggregates the injury data by injury mechanism and intent. The database also contains population data, needed to calculate rates. For demonstration purposes, an Access database file, "SampleVitalData.mdb", with hypothetical denormalized aggregated data can be downloaded here. In order to limit its size, it contains hypothetical 2004 data for only two entities, King county, and the rest of Washington state combined. In addition, since the data has its roots in actual data, to ensure confidentiality, any injury counts between 1 and 4 for any given injury in any given age group have been set to 0. In order for the CreateRateAnalyzerWorkbook.xls application to work, the SampleVitalData.mdb database needs to be placed directly under the root of the C drive (C:\). CreateRateAnalyzer.xlsThis application produces a workbook with the county or EMS region worksheets from an injury database. It is available here in the form of a ZIP file. The one that is available for download here. It is hard coded to obtain its data from "SampleVitalData.mdb." an InjuryRateAnalyzer ApplicationThe workbooks that CreateAnalyzerWorkbook.xls creates only contain data. The rest of the application, all the computer code, is obtained by transferring the computer code from an existing InjuryRateAnalyzer workbook to a new workbook that only contains county or EMS region data. InjuryRateAnalyzer applications are available here. Directions for Creating an InjuryRateAnalyzer ApplicationCreate a Workbook with Injury DataHere are the steps to create a workbook with the needed data:
Add in Computer Code to WorkbookA workbook created using the directions in the "Create a Workbook with Injury Data" (above) has all the worksheets and all the data for an InjuryRateAnalyzer application, but it does not have any of the necessary computer code. Follow these steps to add the code:
Technical NotesAs mentioned in the Statistical Calculations section of the InjuryRateAnalyzer homepage, InjuryRateAnalyzer uses the Chi-squared test for a two way table to determine whether any given rate is significantly different from its complement rate in either the All Ages column or in the Washington State worksheet. The two Z-values for this test, one for testing against the All Ages data, and one for testing against the Washington State data, are pre-calculated by CreateRateAnalyzerWorkbook.xls when an InjuryRateAnalyzer application is being produced. Each rate has these Z-values incorporated into the comment attached to that rate's cell. The comments are sized so that, ordinarily, the Z-values are hidden. To see the Z-values inside a comment, you can resize the comment by going to the Insert menu and then clicking Edit Comment. * WSDOH policy states that all software produced by WSDOH where ownership is not specifically retained by a concern outside of WSDOH through a contract or agreement, is available to be freely shared with publicly supported entities |
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Washington State Department of Health
Injury and Violence Prevention Program
PO Box 47832
Olympia, WA 98504-7832
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Last Update : 10/16/2008 09:02 PM