Codes were organised into descriptive themes and cross-checked against original sources to check interpretation, and refined iteratively until findings represented an agreed understanding.
Deductive codes included: Knowledge of health check, Interpretation of health check, Recall of health check, and Willingness to report health check.
Researchers worked in close collaboration to code articles, check interpretation, and used the constant comparative method and written summaries to verify the emerging findings [ 29, 30].
The questionnaire was pilot tested with 15 patients (French-speaking n = 10, Dutch-speaking n = 5) to check interpretation problems and face validity; no wording problems arose and only minor changes to layout were made.
Stensiö later applied the technique of serial grinding to great effect, even if the fossil (and any chance of checking interpretations) was destroyed in the process.
Validation was also facilitated iteratively during the engagement event and frequent contact with stakeholders, allowed us to check our interpretations were accurate.
As a way of validating the codes, three interviews were independently coded by author one to check the interpretations of the coder and validate the themes.
To limit such risks confirmatory questions were used, the process of coding followed and checked by a co-reader, and critical researchers, physicians and co-readers have been invited to continuously read and check the interpretations made.
