Developing symptom-specific dietary leaflets to address radiotherapy side effects using an eDelphi method

Patients suffering from head and neck (HN) cancer undergoing Radiotherapy (RT) suffer from various debilitating side effects that greatly hinder their eating ability. This leads to patients having a poor nutritional status causing weight loss. This study aimed to assess if an e-Delphi method variation allowed efficiently developing dietary advice leaflets addressing these side effects and achieving a consensus among healthcare professionals.

An e-Delphi style approach was used. Six participants representing the professions working with HN patients were asked to give feedback on four symptom-specific dietary leaflets. These leaflets were designed based on a previous extensive literature review. After each round, the participants' suggested changes were applied. Before applying major changes to the leaflet, the participants were asked to vote if they agreed with each major change.

Overall consensus was reached after three rounds since all participants voted "highly likely" to use it in their clinical practice. Most suggestions by the participants agreed with the existing literature. The only change (accepted as a result of voting) that contradicted the literature was concerning sugar intake.

The participants reached consensus and developed leaflets that were based on literature recommendations for use for patients that, in their opinion, were acceptable for clinical use. This e-Delphi variation proved to be efficient to achieve consensus among healthcare professionals regarding patient information tools.

This eDelphi method is an efficient and effective way to revise and achieve consensus regarding the development of patient information material.