Additionally, we evaluated the distribution of the participant's ethnicity along the genomic components, in order to assess the adequacy of questionnaire-based ethnicity to correct for population structure in the association models.
The adequacy of the questionnaire, as well as the data collection procedures, were tested in a pilot study with 100 eligible individuals from all over the country who did not take part of the sample selected for the study.
(ii) Results also encouraged us to consider the adequacy of our questionnaires.
The results suggest the adequacy of the 16-item questionnaire for evaluating in a valid and reliable way HRQoL of patients with PHPT.
The elements of the questionnaire that considered perceived adequacy of training were based upon a questionnaire previously developed by Thomas and colleagues [ 2].
Volunteers were asked to provide any comments they had about the questionnaire, including clarity of questions, length of the questionnaire and adequacy of response options.
The pilot study was performed to check for clarity and readability of individual questionnaire items and the adequacy of this tool in assessing the knowledge of health practitioners, thereby contributing to the face validity of the questionnaire.
It violates every rule of questionnaire design".
The scales of the PHQ questionnaire were used to estimate the adequacy of the coded diagnoses of the physicians.
