6.8 Optional Parameters
Optional Parameters
As stated in previous sections there are a number of different types of parameters that can be defined in the i2b2 Administration module. Depending where they are defined will determine how the i2b2 behaves. Here is a recap of the different types of parameters.
Type of Parameter |
Description | |
Hive Parameters |
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Cell Parameters |
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User Parameters |
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Project Parameters |
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Project User Parameters |
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The sections that follow will contain information about additional parameters that can be entered into the i2b2 Administration Module.
6.8.1 Unit Conversion for Numerical Observations
Unit Conversion for Numerical Observations
In the OBSERVATION_FACT table the UNIT_CD column stores the unit value for your numerical observations. An example of a value in UNIT_CD would be mg for milligram or gm for gram.
Although i2b2 recommends the units be normalized to a single unit we also recognize this is not always possible. In this instance, you may wish to have the units converted automatically when running a query in which a value constraint is defined. To turn this feature on you would add the following parameter to the Project you want it applied.
Type of Parameter: Project Parameter
Parameter Name: CRC_ENABLE_UNITCD_CONVERSION
Value |
Description |
ON |
Enables unit conversion |
OFF |
Disables unit conversion (default setting) |
Note |
The parameter does not change the data stored in the database. It is simply applied when the query is run. |
For steps on how to add a project parameter please see the section titled Add Project Parameters located in this chapter.
6.8.2 Enable Process Timing
Enable Query Processing Steps and Timing
In the i2b2 Web Client when you run a query the length of time it takes to run the query will display in Query Status. A project parameter can be added that will expand the timing information that is displayed.
Type of Parameter: Project Parameter
Parameter Name: PM_ENABLE_PROCESS_TIMING
Value |
Description |
|
INFO |
Basic process timing information will be returned. |
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DEBUG |
Detailed process timing information will be returned. |
For steps on how to add a project parameter please see the section titled Add Project Parameters located in this chapter.
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