Data were collected through 'structured open-response interviews' ([King 1994]) which fall between a structured questionnaire with closed questions, and ethnographic interviews with a very low degree of structure imposed by the interviewers.
The final selection of the schools in the pilot has been done based on the analysis of the questionnaire's responses, interviews with interested teachers, and on-site visits that were also performed.
The highly educated had the highest response rate in the postal questionnaire and this also is the case when complemented with the responses from the non-response interviews.
After patients completed the questionnaire, the dietitian reviewed the answers and in the case of questionable responses interviewed the patient.
Key issues in data quality are the ability of survey questions to garner valid responses, interview length, response rates, and sampling issues (4).
When two individuals were interviewed together, and we found no instances of disagreements, we recorded only one response per interview.
"As experience shows, restructuring announcements can cause concern and even protest," he said in a written response to interview questions.
