The complex pattern of participation found in this study calls for a flexible model of involving children and adolescents in health care that accounts for the varying roles and preferences that they manifest. A patient may appreciate active involvement in some decisions while choosing to remain in the background for others. Copyright © 2015 John Wiley & Sons, Ltd.

A detailed understanding of DMC is necessary to inform developmentally appropriate participation. In order to achieve this, pediatric practice needs to address challenges that are specific to providing healthcare for children, including conceptual issues, assessment, and aspects of child development.

•Adequate participation of pediatric patients in communication and decision-making is recommended by professional guidelines but little guidance exists as to how to translate it into practice. What is New: •The strategies used by physicians, parents, and patients to achieve participation are complex and serve to both enable and restrict children's and adolescents' involvement.

The ethical imperative for inclusion of children in their health care choices was not so much determined by the right for self-determination, but by the need to include them. If children are excluded, they imagine things, become more isolated, and are left alone with their fears. Nevertheless, the urge to protect children is innate, as adults often underestimate children's coping capacities.

Patient participation in these processes was reported as sometimes limited, but parents and oncologists should continue to probe patients' abilities and desire to be involved in decision making. Future research should expand the DPM and explore how decisional priority and authority can be shared by oncologists with parents and even patients.