What are base and sub-themes?
Thematic analyses and categorizes text using a set of themes it creates for each data set. These themes are customizable and organized into a two-level hierarchy of base and sub-themes.
- Base themes are general concepts or topics, while sub-themes are more specific.
- Sub-themes are grouped under the most relevant Base theme.
- A single comment can be tagged with multiple base and sub-themes.
- Each theme has its own mapped phrases discovered and set by the Thematic algorithm. They are used to identify and tag the text with themes.
- Base theme volume is equal to the number of responses tagged by at least the base theme, or one or more of the sub-themes under that base theme.
An example of a base theme and its sub-themes is "airplane seats" from our airline's demo.
airplane seats (Base theme)
- seats comfort (Sub-theme)
- seat space (Sub-theme)
- airplane seats (other) (Sub-theme)
- good seats (Sub-theme)
- seat assignments (Sub-theme)
- seats in front (Sub-theme)
- no assigned seating (Sub-theme)
- middle seat (Sub-theme)
- seats purchased (Sub-theme)
- choose a seat (Sub-theme)
What is an (other) sub-theme?
The (other) sub-theme is used to identify comments that fall under the base themes but not any of its specific sub-themes.
Does all the sub-themes volume add up to the base themes volume?
Not necessarily because comments can be tagged with multiple themes, but will only count towards the base theme once.
The sub-theme good seats has a set of mapped phrases it uses to tag responses.
- "amazing seating"
- "fantastic seats"
- "seats are great"
- "seats which was awesome"
Editing themes and mapped phrases
Thematic themes and mapped phrases can be edited for any of your data sets. If you have admin rights you can edit themselves in your themes editor, and if you don't you can contact an admin at your organization to help coordinate changes.