Tube feeding during treatment for head and neck cancer – Adherence and patient reported barriers

Treatment fidelity is important to assess in intervention research trials as it refers to the extent to which interventions are delivered as intended according to the study protocol [1]. It is particularly important for intervention research trials which encompass behavioural change, so that the efficacy of the intervention can be considered in the correct context and inappropriate rejection of potentially effective interventions can be minimised [2]. Treatment fidelity has been described as having at least four core components including: study design and protocol to outline how the intervention should be organised and delivered; training and supervision of those delivering the intervention to ensure consistency; monitoring of intervention delivery to determine whether the intervention was delivered as intended; and monitoring of intervention receipt to determine whether the intervention was received and understood [1,3].

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