For all children within a family scoring clinically on any of the questionnaires, a semi-structured, standardized, investigator-based interview was administered separately for each child: the Parental Account of Children's Symptoms (PACS; Taylor 1986).
As family burden was a main variable of interest, initial statistics are reported based on all those to whom the family burden interview was administered (N = 3192).
Demographic data were collected and a self-report adherence interview was administered.
No PACS interview was administered concerning non-affected siblings.
The interview was administered using a pre-tested structured questionnaire.
Therefore, the second interview was administered to 67 patients.
Quantitative measures and a qualitative interview were administered.
In the second stage, a semi-structured interview is administered.
Follow-up interviews were administered every two months, or sooner based upon information by GPs that the condition of a patient had rapidly deteriorated.
Research interviews were administered by trained interviewers.
Diagnostic interviews are administered either face-to-face at the treatment location or via telephone, based on the patient's preference.
