Stacking survey data loops in Protobi

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Updated at October 16th, 2019

Surveys sometime contain "loops," sub-sections of the survey that are repeated several times. This is common in product concept testing and patient case reviews:



Flatten vs stack

There are a few ways that looped data can be represented.  One is to "flatten" the data, such that there is one row per respondent, and one column per question per loop: 


Another is to "stack" the data such that there is one column per question and one row per respondent per loop:

Protobi can represent both structures.

Which makes the most sense for your survey? That depends on your survey and analysis goals.  

Below is a PDF with a more detailed discussion...

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survey-loops-protobi.pdf

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