Retrospective Analysis of the Impact of a Dietitian and the Canadian Nutrition Screening Tool in a Geriatric Oncology Clinic

Introduction: Canada’s aging population is leading to an increased number of older adults being diagnosed with cancer. This population faces unique challenges, including frailty, comorbidities, polypharmacy, and malnutrition, which can negatively affect treatment outcomes. The role of registered dietitians (RDs) in managing nutrition-related issues in this population is well-documented, but there is limited research on their integration into geriatric oncology clinics. We evaluated the impact of integrating a registered dietitian (RD) into the Older Adult with Cancer Clinic (OACC) at the Princess Margaret Cancer Centre, Toronto, Canada. Materials and Methods: A retrospective chart review was conducted of older adult cancer patients seen at the OACC, comparing outcomes before and after the RD’s integration. The focus was on weight characteristics and change, malnutrition screening/identification, and management. The two-item Canadian Nutrition Screening Tool (CNST) was introduced during the RD’s integration and was also examined to see its usefulness in identifying malnutrition risk. Chi-squared tests and t-tests were used for data analysis. Results: The pre-cohort (n = 140) had a mean age of 80.2 years, 48.6% female, and 77.9% vulnerable (Vulnerable Elders Survey (VES-13) ≥ 3). The post-cohort (n = 117) had a mean age of 81.4 years, 59.8% female, and 80.3% vulnerable (VES-13 ≥ 3). Weight change within 3 ± 1 months after the initial OACC consult was similar between pre and post groups with −1.4 kg and −1.2 kg, respectively (p = 0.77). Patients at nutritional risk, as determined by the OACC team, generated significantly more referrals to the RD in the post group (100% vs. 36.4%, p < 0.001). Among patients who had CNST screening and saw the RD, there was a higher rate of high nutrition risk among CNST-positive compared to CNST-negative patients (67.2% versus 44.4%, respectively). After the integration of the RD, a greater number of patients at nutritional risk received nutritional education and referrals to ...