Objectives and corresponding data collection methods
| Objective | Data collection method | |
| Quantitative | Qualitative | |
| Determine the perceptions of the patients and surgeons in their involvement in the shared decision-making process | SDM-Q-9 SDM-Q-Doc | Multiple semistructured interview questions, open and closed questions |
| Explore the level of decisional self-efficacy of the patients | ODSE | Semistructured interview questions, open questions |
| Explore the level of decisional conflict experienced by patients | DCS | Semistructured interview questions, open questions |
| Determine the current thoughts and viewpoints of patients and surgeons in regard to the decision-making process for the surgical management of oral cavity cancer | – | Multiple semistructured interview questions, open and closed questions |
| Determine whether patients and surgeons feel a decision aid would be of benefit in this process | – | Multiple semistructured interview questions, open questions |
| Determine possible information for inclusion in a decision aid | – | Multiple semistructured interview questions, open questions |
DCS, Decision Conflict Scale; ODSE, Ottawa Decision Self-Efficacy Scale; SDM-Q-9, Nine-item Shared Decision-Making Questionnaire; SDM-Q-Doc, Nine-Item Shared Decision-Making Questionnaire, Physician Version.