View cohort timelines

Figure 3-3 A cohort timeline containing data on diagnoses, procedures and medications of patients

For more information, see:

• Select patients or subjects
  
• Filter data in cohort timelines
  
• Display patient or subject data
  
• Select the Timeline Mode
  

Select patients or subjects

This step is similar to how you select patients or subjects for the Cohort List.

1. Along the top, click the Cohort Timelines tab.
2. On the left, expand Patients or Subjects to select the source of your patients' or subjects' IDs from an active query, library query, list or ad-hoc query.
3. Click Make initial pool.

   All patients or subjects from the selected query are added to the initial pool.

4. Select up to 20 patients or subjects and click the arrow () to move them from the initial pool to the display list.

   The data displayed in the cohort timeline is of these 20 patients or subjects.

WARNING:

Don't click Submit yet! Wait until the next section.

Filter data in cohort timelines

1. On the left, click the Data section.
2. Change the colors of the data criteria, if needed.
3. Either click the radio button for Include criteria used in a query or set your custom criteria.

   Note:

   The Include criteria used in a query can only be used for active queries.

   This option filters clinical records in cohort lists and cohort timelines only on the basis of the primary coded attributes from the Cohort Query screen. For example, it only uses Diagnosis Codes, Procedure Codes or Medication codes.

   If the inclusion criteria of the active query is not based on any data topics supported in the cohort lists, a message is displayed to select at least one supported data element.

   To set custom criteria:

   1. Select the criteria.
   2. Click the search icon ().
   3. In the newly opened window, enter all required details and click Search.
   4. Select the elements that you want to use from the left side and move them to the right side using the arrow ().
   5. Click Submit.

4. Now that you have your data set, click Submit again.

Display patient or subject data

The subject and patient data display is divided into two sections.

• The left side has attributes about the selected patients/ subjects: Patient/ Subject ID and Event Name.
• To see demographic data for a Patient or Subject, hover over their ID.
• The right side shows the colored layers of the selected clinical data, in a timeline view.
• To see more details of a patient or subject and their medical records, click on an Event link from the left side table. A pop-up appears with more data on the event.

  Figure 3-4 Event data shown in a pop-up window

  
• To navigate to the Single Patient Viewer, and see details of a specific subject or patient, click the Subject or Patient ID.

• To view data for a specific date range, along the top, use the Time Scale options:
  • To view data for certain date range, enter the From and To dates and click Update.
  • To view data without a specific time reference, select the Auto option.
• For plotting the Observation events, Observation Effective Start Date and Observation Effective End Date are used as the preferred dates. If these dates are not available then Observation Date is used. The following decision table is used for determining the Start Date and End Date for plotting the Observation event on the chart:

  Table 3-1 Data for Plotting Observation Event

  W_EHA_OBSV_PATIENT/SUBJECT_H_V			Start Date value in Timeline Plot	End Date value in Timeline Plot	Comment
  OBSV_EFF_START_DT	OBSV_EFF_END_DT	OBSV_DT	--	--	--
  Available	Available	Available/Not Available	OBSV_EFF_START_DT	OBSV_EFF_END_DT	If difference between the two dates is less than 1 Day then for deriving End Date value OBSV_EFF_START_DT plus 1 Day is used.
  Not Available	Available	Available	* If OBSV_DT is one or more days(s) prior to OBSV_EFF_END_DT then OBSV_DT is used.* If OBSV_DT and OBSV_EFF_END_DT are on the same day then OBSV_EFF_END_DT minus 1 Day is used.* If OBSV_DT is one or more day(s) later than OBSV_EFF_END_DT then OBSV_EFF_END_DT minus 1 Day is used.	OBSV_EFF_END_DT	--
  Available	Not Available	Not Available	OBSV_EFF_START_DT	OBSV_EFF_START_DT plus 1 Day	--
  Not Available	Available	Not Available	OBSV_EFF_END_DT minus 1 Day	OBSV_EFF_END_DT	--
  Not Available	Not Available	Available	OBSV_DT	OBSV_DT plus 1 Day	--
  Not Available	Not Available	Not Available	Null	Null	Event is not plotted

• Events are not displayed on the left-hand table or on the timeline in the following conditions:
  • When an event's Start Date is null.
  • When both Start Date and End Date for the event are null.
• If an event's End Date is null, then the System Date is used for displaying the event.

Select the Timeline Mode

To view events in different ways, go to View same Events along the top and select one of the radio buttons:

On single line

This is the default mode of displaying data in a timeline.

In this mode, all instances of a repeating event are displayed on the same line and separate events are displayed on separate lines.

On multiple lines

In this mode, all of instances of events are displayed on different lines, even if the events are repeating.