We describe the four cognitive processes respondents use to answer survey questions: comprehension, retrieval, judgement, and response.
Our objective was to assess the English and Urdu language versions of the survey for comprehension through probing, to interpret qualitative data and key themes, and to identify problems with questions and responses while comparing issues that emerged among each group, and to make revisions.
Key interview probes were used that directly and intentionally match the steps of the standard cognitive model for survey response (comprehension, retrieval, judgement, response formulation) [ 19].
To obtain this precision we dichotomized one item of the survey (adequate comprehension: yes/no) assuming maximum variability (50% of affirmative responses).
Durante and Ainsworth emphasize an approach based on the four basic stages of answering standardized survey questions; comprehension, retrieval, decision making, and response generation [ 48].
We have estimated a sample size of 600 respondents needed to answer one of the specific objectives of the survey (adequate comprehension of grading systems) in the GPs group, with a precision of 4%.
Our objective was to develop and validate a survey to assess comprehension of CPR among ICU patients and surrogate decision-makers.
We tested a draft version of the survey instrument for comprehension, length and ease of administration with three participants from eligible schools, and made minor modifications based on their feedback.
Finally, cognitive interviews were conducted with three patients who had received CC services at the Community Health Center, Inc. to verify the ease of comprehension of the survey items, survey instructions, study information sheet, definition of key terms, skip patterns and response options.
