Establishing treatment fidelity in a coping and communication support telephone intervention for aging patients with advanced cancer and their family caregivers.

A randomized controlled trial of a nurse-delivered coping and communication support (CCS) intervention tailored to the preferences of middle-aged and older patients with advanced cancer and their family caregivers is tested for its value in improving outcomes for quality cancer care. An intervention study must be reliably delivered to estimate the accuracy of findings or make valid conclusions about the outcomes of research. The purpose of this article was to describe methodology for ensuring treatment fidelity in this patient-centered CCS intervention.