Evaluating a delegated allied health assistant-led model for procedural care for children with cancer: A non-inferiority trial design

For children facing a cancer diagnosis, the hospital experience involves more than just treating the disease; it requires navigating a gauntlet of medical procedures. These can range from inserting needles into ports under the skin to receiving anesthesia for surgeries. While the disease itself is terrifying, the fear and anxiety surrounding these routine procedures often cause children more immediate pain and distress than the illness. This anxiety is not merely a temporary worry; it can create a cycle where fear leads to worse experiences, which in turn makes future procedures even harder to endure. In severe cases, this distress can force medical teams to use sedatives or physical restraints, or even delay necessary treatments. To manage this, hospitals employ specialized therapists who help children prepare for and cope with these procedures. However, as the number of children needing cancer treatment rises, the demand for these therapists is outpacing the available staff, raising concerns about whether the current system can sustain itself without burning out the caregivers or leaving patients without support.

Researchers at the Queensland Children's Hospital in Australia set out to solve this workforce challenge without sacrificing the quality of care. They tested a new way of organizing their team, asking a simple but critical question: Can a trained assistant, working under the guidance of a specialist therapist, provide just as much relief from procedural anxiety as the specialist therapist themselves? In this model, a specialist therapist first screens every child to determine their level of distress. Those with higher levels of anxiety continue to receive direct care from the therapist. Those with lower levels of distress are delegated to an Allied Health Assistant, a professional trained to deliver specific supportive tasks. The study recruited 110 children with cancer, ranging in age from one to sixteen years, and followed nearly all of them over a three-month period, with 97.2% completing the follow-up. The team measured the children's anxiety levels at the start of their treatment and again three months later, comparing the progress of those who saw the specialist therapist against those who saw the trained assistant.

The results of this non-inferiority trial, which ran from September 2024 to September 2025, showed that the assistant-led model worked just as well as the specialist-led model for children with lower levels of distress. The data indicated that the reduction in anxiety for children supported by the assistants was not worse than the reduction seen in children supported by the therapists. In fact, the statistical analysis confirmed that the assistant-led approach met the strict criteria for being considered non-inferior, meaning it was safe and effective to use this delegation model for a significant portion of the patient population. The study found that about two-thirds of the children were allocated to the specialist therapist, while 26.45% were managed through the assistant-led pathway, with the remaining children falling into other categories or not completing the full follow-up. This distribution suggests that a large number of families could be supported by assistants, freeing up the highly specialized therapists to focus on the children with the most complex and severe needs.

The study also highlighted the importance of the screening process. When children were first assessed, those with a distress score of four or higher on a scale of zero to ten were directed to the specialist therapist. Those scoring below this threshold were guided to the assistant. During the three months of the study, about 35 percent of the children initially assigned to the assistant required an unplanned review by the specialist therapist. This happened when a child's distress escalated due to complications in their treatment or new, unexpected medical demands. This safety net proved vital, ensuring that if a child's needs grew beyond what the assistant was trained to handle, a specialist stepped in immediately. The researchers noted that the assistants were supported by a structured training package that took about four hours to complete, along with monthly supervision from a senior therapist, which ensured they remained confident and competent in their expanded role.

While the study was successful in demonstrating that this model works, the authors also pointed out the complexities of measuring a child's emotional state. They observed that parents often rated their children's distress higher than the children rated themselves, and that the timing of the assessment mattered greatly. A child might feel overwhelming anxiety just after a new diagnosis but feel much calmer a few months later, or vice versa, depending on the intensity of their treatment at that moment. Because of these fluctuations, the researchers emphasized that numbers alone cannot tell the whole story; clinicians must also have high-value conversations with families to understand the context of a child's anxiety. Despite these challenges, the study concluded that delegating care to trained assistants is a sustainable strategy. It allows hospitals to provide timely, developmentally appropriate support to every child, ensuring that the system can handle the growing number of patients while maintaining high-quality, patient-centered care. This approach offers a practical path forward for healthcare leaders looking to optimize their workforce without compromising the well-being of the children they serve.