Sentence examples for questions were used from inspiring English sources

Standard questions were used to collect data.

39 questions were used for data collection.

Semi-structured open-ended questions were used.

Open-ended questions were used to elicit qualitative responses.

Semi-structured questions were used for focus group interviews.

These questions were used to evaluate ULLs in the spatio-temporal dimension.

Thus, different topics and different questions were used to make the subjects feel comfortable.

Structured interviews, open- and closed-ended questions, were used to collect data.

Open-ended questions were used to seek information from FGD participants (Additional file 3).

Yes/No questions were used in combination with open-ended questions.

[single question measure] amean values of the questions were used for the analysis  .