Risk factors for worse anxiety trajectories among patients undergoing cancer chemotherapy

Patients undergoing chemotherapy for cancer often experience heightened anxiety. While receipt of chemotherapy occurs over multiple cycles, limited research has examined anxiety longitudinally. The purposes of this study, in a large sample of patients with breast, gynecological, gastrointestinal, or lung cancer, were to evaluate, over the course of two cycles of chemotherapy, for inter-individual differences in the trajectories of anxiety and identify associations between demographic, clinical, symptom, and psychological adjustment characteristics and initial levels and trajectories of anxiety.

Patients with breast, gynecologic, lung, or gastrointestinal cancer (n = 1323) were assessed with the Spielberger State Anxiety Inventory (STAI-S) six times over two cycles of chemotherapy. At enrollment, patients completed self-report instruments assessing demographic, symptom, stress, and coping characteristics. We used hierarchical linear modeling to identify risk factors associated with initial levels and trajectories of state anxiety.

Inter-individual differences in initial levels of anxiety were associated with functional status, sleep disturbance, morning fatigue, cognitive function, global and cancer-specific stress, resilience, and several coping characteristics (i.e., sense of coherence, acceptance, using emotional support, self-distraction, denial, venting, and self-blame). Demographic and clinical characteristics associated with interindividual differences in anxiety trajectories were age, employment status, and MAX-2 score.

This study provides novel data on the course and predictors of anxiety during two cycles of chemotherapy among a large sample of patients with varied cancer types. Further research focused on risk factors for heightened levels of anxiety during chemotherapy may help point toward more effective interventions for this commonly experienced symptom.