Face-to-Face
- A national network of more than 900 interviewers
- 28 regional supervisors
- A monthly average of 20 000 face-to-face interviews
In line with the standards pursued by GfK Ukraine, the following measures are taken to provide high quality of information:
- visual control of prepared set of tools: correspondence of numbering of questions, alternatives, logic of go-to instructions in the questionnaire
- detailed briefing is arranged for interviewers
- pilot interviews
The procedures for ensuring F2F interview quality:
- minimum 15% of the sample is controlled personally (minimum 3% of the sample) or over the phone
- 100% visual control of questionnaires
- minimum 10% double entry of questionnaires
- respondents address and phone control is done to avoid repetitions, as well as multiple participation of respondents in other surveys
- analytical control of data sets is done – correlation of deviation from the mean by each interviewer; coherence of questionnaires; tracking down of repeating questionnaires
- monthly rotation of interviewers in all cities where tracking research is carried out
