In the menu, go to 'Results' and 'Questionnaire runtime and incompletes'.
Questionnaire runtime
The average runtime is an indication and is displayed when there are more than 10 completes. For the calculation, the absolute time between the start and the completion of the questionnaire is used. This excludes completes that take more than two hours to complete.
Incompletes
Here you get insight into the number of respondents that answered this question last. Respondents have seen the question, but did not answer it. The last question seen by the respondent is not always the immediately following question and depends on the routing.