133 Background: Chemotherapy-associated toxicities occur often, yet sparse data are available to correlate toxicities with related service use. Toxicities may disrupt treatment, impair quality of life, and induce unplanned service use. We sought to understand the frequency and correlates of unplanned service use among patients receiving first-cycle chemotherapy at 5 community-based ambulatory oncology practices in southeast Michigan. Methods: A prospective survey examined the dichotomous outcome of toxicity-related unplanned service use. Newly-diagnosed patients were recruited before the first chemotherapy cycle. At the second cycle visit, patients completed a questionnaire that measured severity of nausea, vomiting, diarrhea, constipation, mouth sores, IV catheter problems, pain, fever/chills, extremity edema, and dyspnea on a 5-point scale (1 = did not experience to 5 = disabling). They also rated distress on a 10-point scale (0 = none, 10 = worst). Patients reported unplanned oncologist visits, emergency department visits, and unplanned hospitalizations, all of which were treated as unplanned service use. Mixed-effects logistic regression was used to identify factors associated with unplanned service use, with random effects for each clinic. Results: Among 106 patients (98% white, 74.5% women, mean age 60+11), common diagnoses were breast, lung, and colorectal cancer and non-Hodgkin lymphoma. Frequent toxicities were pain, nausea, diarrhea, and constipation. Thirty-six patients (34%) reported unplanned service use: 29% reported oncologist visits, 14% reported ED visits, and 8% reported hospitalizations. 45% of the total sample and 89% of patients with unplanned service use reported at least one toxicity that was severe or disabling. Factors associated with unplanned service use were high patient-reported distress and receipt of colony-stimulating factor. Conclusions: Toxicity-related service use was common in this community oncology population. Proactive symptom assessment tools may help clinicians manage toxicities between visits. A deeper understanding of toxicity patterns and correlates can inform clinical practice guidelines in community oncology practices.
Trajectories of Mental Health–Related Service Use Among Adolescents With Histories of Early Externalizing Problems
