If an irregularity is identified with an interviewer, all interviews conducted by them are checked by phone and, if necessary, not counted
If an interviewer is then proven to have poor quality or even fraud, they are removed from the interviewer pool and will no longer be deployed
This is also stipulated in the framework agreements concluded with our interviewers, under which “black sheep” can be reported to the BVM
Each interviewer must confirm the accuracy of the interviews with their signature
If an irregularity is identified with an interviewer, all interviews conducted by them are checked by phone and, if necessary, not counted
If an interviewer is then proven to have poor quality or even fraud, they are removed from the interviewer pool and will no longer be deployed
This is also stipulated in the framework agreements concluded with our interviewers, under which “black sheep” can be reported to the BVM
Each interviewer must confirm the accuracy of the interviews with their signature
In addition, quality and plausibility checks are carried out for all interviews in the dataset (e.g. correlations between key questions, variances in item batteries, etc.)
For PAPI surveys, each individual questionnaire is checked
Interviews that are not internally consistent are deleted or not counted
CAPI questionnaires are checked for correct routing immediately after programming and after conducting a relevant number of pilot interviews
During the studies and immediately after they end, we carry out around 20% telephone checks
In addition, quality and plausibility checks are carried out for all interviews in the dataset (e.g. correlations between key questions, variances in item batteries, etc.)
For PAPI surveys, each individual questionnaire is checked
Interviews that are not internally consistent are deleted or not counted
CAPI questionnaires are checked for correct routing immediately after programming and after conducting a relevant number of pilot interviews