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Radiotherapy benefit and side-effect expectations were largely independent before treatment

Patients generally expected high radiotherapy benefit, but expectations of benefit and adverse events were not significantly correlated.

RadOncToday · ·1 min read

KEY POINTS

  • ExpectRT was a single-centre cross-sectional survey conducted at planning CT after radiotherapy consent but before treatment. Of 369 potentially eligible patients, 140 participated and 133 were analyzable, corresponding to a conservative participation rate of approximately 38%.
  • Median age was 67.5 years, approximately half of participants were women, 83.5% reported curative treatment intent, and 23.3% had previously received radiotherapy. Expectations were assessed using the validated 0–10 Treatment Expectation Questionnaire.
  • Overall radiotherapy expectations were favorable: mean TEX-Q score was 7.0/10, expected treatment benefit 8.6/10, and expected adverse-event severity 4.3/10. Internal reliability across TEX-Q scales ranged from Cronbach α 0.71–0.93.
  • Expected treatment benefit and expected adverse effects were essentially independent (Pearson r −0.15, 95% CI −0.31 to 0.03; p=0.10). Patients could therefore simultaneously believe strongly in treatment efficacy while still expecting substantial toxicity.
  • In multivariable analyses, living alone was associated with poorer overall expectations and greater adverse-event expectations; higher education was associated with lower overall and treatment-benefit expectations. Concurrent chemotherapy was additionally associated with poorer overall expectations (p=0.048).
  • Patients reporting palliative or uncertain treatment intent expected less benefit, while greater psychological distress was associated with worse expected adverse effects. Inpatients also anticipated more adverse effects than outpatients. Age, sex and global health-related quality of life were not independently associated with expectations.
  • The final models explained only 8–13% of variance, emphasizing that these demographic and clinical factors capture only a small part of how expectations form. All variables were self-reported, no longitudinal toxicity or outcome data were included, and the modest participation rate leaves potential selection bias.

CLINICAL TAKEAWAY

Pretreatment communication should not assume that a patient who expects radiotherapy to work is therefore unconcerned about toxicity: benefit and harm expectations appear to be separate dimensions. Living alone and high distress may identify patients who need more tailored counselling or support, but whether changing expectations improves outcomes remains unanswered.

SOURCE

Technical Innovations & Patient Support in Radiation Oncology