Comparison of subgroups of breast cancer patients on pain and co-occurring symptoms following chemotherapy
The purposes of this study, in a sample of women with breast cancer receiving chemotherapy (CTX), were to identify subgroups of women with distinct experiences with the symptom cluster of pain, fatigue, sleep disturbance, and depressive symptoms and evaluate differences in demographic and clinical characteristics, differences in psychological symptoms, and differences in pain characteristics among these subgroups.
Patients completed symptom questionnaires in the week following CTX administration. Latent class profile analysis (LCPA) was used to determine the patient subgroups.
Three subgroups were identified: 140 patients (35.8 %) in the “low,” 189 patients (48.3 %) in the “moderate,” and 62 patients (15.9 %) in the “all high” latent class. Patients in the all high class had a lower functional status, a higher comorbidity profile, a higher symptom burden, and a poorer quality of life.
Study findings provide evidence of the utility of LCPA to explain inter-individual variability in the symptom experience of patients undergoing CTX. The ability to characterize subgroups of patients with distinct symptom experiences allows for the identification of high-risk patients and may guide the design of targeted interventions that are tailored to an individual’s symptom profile.
KeywordsPain Fatigue Sleep disturbance Depression Breast cancer Latent class profile analysis Quality of life
This study was funded by the National Cancer Institute (CA134900). Dr. Miaskowski is an American Cancer Society (ACS) Clinical Research Professor and has a K05 award from the National Cancer Institute (CA168960). Dr. Langford was supported by a Department of Defense Breast Cancer Research Program Postdoctoral Fellowship.
Conflict of interest
The authors have no conflicts of interest to declare. The authors had primary control over all of the data and agree to allow the journal to review the date if requested.
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