Reports | Outliers

Outliers
**Need summary
This report identifies outliers and sites with excessive (or too few) outliers.
Note : JMP Clinical uses a special protocol for data including non-unique Findings test names. Refer to How does JMP Clinical handle non-unique Findings test names? for more information.
Report Results Description
Running this report with the Nicardipine sample setting generates the report shown below.
The Report contains the following elements:
Outliers Volcano Plot
Shows a volcano plot used to determine the deviation of the proportion of outliers at each study site with the overall proportions for the whole study. The X axis is calculated using p(site) - p(reference) , where p(site) is the proportion (or percent) of outliers in the site in question and p(reference) is the proportion of outliers in all other sites.
One Data Filter .
Enables you to subset subjects based on country of origin, study site and/or Test. Refer to Data Filter for more information.
The volcano plot is used to determine the deviation in the proportion of outliers at each site from the proportion of outliers at all of the other sites. The X axis represents the difference in proportions for measurements that are considered outliers between the site and the reference set (all other sites).in the proportion of outliers at each site from the average proportion at all of the other sites.
You can mouse over points of interest to see their labels or select points by dragging a mouse rectangle over them (as shown above). Selected rows are highlighted in other plots and you can also then click on various Down Buttons for further analyses on those specific sites. For example, if you click the Outlier Bar Charts ( ) down, the following opens with comparisons of sites 3 and 40 with all sites not site 3 or 40, respectively.
In these plots, 0 represents findings that are not outliers and 1 represents findings that are outliers. Both sites have an excessive number of outliers for QRS Duration.
ECG Test Results
Displays histograms showing distribution of ECG findings across study sites, tests, and visit numbers, as well as the frequencies and types of outliers.
This section contains the following elements.
Data Filter : Enables you to filter data based on study site and country.
Distributions : Displays histograms showing distribution of ECG findings across study sites, tests, and visit numbers, study sites, categories and tests. The last two histograms show the relative proportion of outliers and whether they are outliers because the value is too high (Outlier: Above) or small (Outlier: Below). Clicking Show Subjects will open a data table that will show the range of non-outlier values (Lower and Upper Outlier Limits).
Laboratory Test Results
Displays histograms showing distribution of laboratory test findings across study sites, tests, and visit numbers, as well as the frequencies and types of outliers.
This section contains the following elements.
Data Filter : Enables you to filter data based on study site and country.
Distributions : Displays histograms showing distribution of LB findings across study sites, tests, and visit numbers, study sites, categories, and tests. The last two histograms show the relative proportion of outliers and whether are outliers because the value is too high (Outlier: Above) or small (Outlier: Below). Clicking Show Subjects will open a data table that will show the range of non-outlier values (Lower and Upper Outlier Limits).
Vital Signs
Displays histograms showing distribution of vital signs findings across study sites, tests, and visit numbers, as well as the frequencies and types of outliers.
This section contains the following elements.
Data Filter : Enables you to filter data based on study site and country.
Distributions : Displays histograms showing distribution of VS findings across study sites, tests, and visit numbers, study sites, categories, and tests. The last two histograms show the relative proportion of outliers and whether are outliers because the value is too high (Outlier: Above) or small (Outlier: Below). Clicking Show Subjects will open a data table that will show the range of non-outlier values (Lower and Upper Outlier Limits).
Action Buttons
Action buttons, provide you with an easy way to drill down into your data. The following action buttons are generated by this report:
Show Sites : Shows the rows of the data table for the selected points from the volcano plot . Clicking opens the following table:
Frequencies Bar Charts : Select points on the volcano plot and click to display a bar chart for each point showing the proportions of outliers for the site as compared with the average of all of the other sites.
Profile Subjects : Select subjects and click to generate the patient profiles. See Profile Subjects for additional information.
Show Subjects : Select subjects and click to open the ADSL (or DM if ADSL is unavailable) of selected subjects.
General
Click to view the associated data tables. Refer to View Data for more information. Note: Numeric data for individual subjects come directly from the xxSTRESN 1 variable from the domain data sets.
Click to generate a standardized pdf - or rtf -formatted report containing the plots and charts of selected sections.
Click the Options arrow to reopen the completed report dialog used to generate this output.
Click the gray border to the left of the Options tab to open a dynamic report navigator that lists all of the reports in the review. Refer to Report Navigator for more information.
Methodology
This report compares the outlier status of tests with each site compared to all other sites taken together as a reference. A point is an outlier if it exceeds the upper outlier limit ( Q3+1.5×IQR ) or is less than the lower outlier limit ( Q1-1.5×IQR ), where Q1 and Q3 are first and third quartiles and IQR =Q3-Q1 . It then compares the rate of outliers using Fisher's exact test. FDR p -values are calculated and the reference line is determined as described in How does JMP Clinical calculate the False Discovery Rate (FDR)? .
Report Options
Report Option Descriptions
Specific documentation for each of the options can be viewed by clicking on the following links:
General Options
Analyze all tests from all findings domains , Findings Tests , Analyze: , Consider BY variables in the analysis
Summarize sites with at least this many subjects:
Alpha
Subject Filter 2
Additional Filters
Additional Filter to Include Subjects 3 , Select the population to include in the analysis

1
Where xx is the two-letter domain name.

2
Subject-specific filters must be created using the Create Subject Filter report prior to your analysis.

3
For more information about how to specify a filter using this option, see The SAS WHERE Expression .