# Define groups of tracks

Aim

To compare groups of tracks. For example, to compare the tracks of animals treated with a drug with the tracks of control animals.

You can easily create groups by filtering tracks according to one or more independent variables, and linking that filter criterion to a specific Result box.

Procedure

1.Create a new Data profile.

2.To add a Result box, in the Components pane under Common elements click the button next to Result.

The new Result box is by default named Result 2. Place this box somewhere under the Result 1 box.

3.Connect the Start box to the Result 2 box.

4.Filter your tracks by the independent variable Treatment Level:

▪Click the button next to Treatment Level. Choose Control and place the resulting Filter box between Start and Result 1.

▪Click again the button next to Treatment Level. Choose Treated and place the resulting Filter box between Start and Result 2.

5.The Data Profiles window should look like this:

The two Result boxes receive the data filtered according to the independent variable Treatment Level. Result 1 receives five tracks filtered with Treatment Level = Control. Result 2 receives other five tracks filtered with Treatment Level = Treated.

6. tip The name of the Result box is shown in the results (statistics and track plots), so it is good to give a name that reminds you from which data selection that result comes from. Click Settings in a Result box and rename it. For example, rename Result 1 to Control group.

See also

▪Edit the Result box name