Subjective, but not objective, cognitive complaints impact long-term quality of life in cancer patients

Cognitive complaints, of objective or subjective nature, may negatively impact cancer patients' quality of life (QoL). Further, the early detection of cognitive alterations may lead to an improved QoL. However, the content of such screening is yet unclear. This paper presents long-term QoL data of cancer patients treated with curative intent and its relation with objective and subjective cognitive complaints, and patient-reported outcome measures (PROMs).

QoL data, measured by the EORTC QLQ C-30, were obtained at baseline, 6 (T1), 12 (T2), and 24 months (T3) after treatment start, and compared between patients with and without objective and subjective cognitive complaints. The predictive value of PROMs was also examined.

QoL data at baseline was collected in 125 patients. Response rates at T1, T2, and T3 were 84.7%, 81.5%, and 83.1%, respectively. Eighty-nine patients returned their QoL questionnaires at all times. Baseline subjective cognitive complaints had a stronger association with worse scores on patients' overall QoL and QoL subscale scores than objective cognitive complaints. An exploratory analysis into the value of PROMs in predicting long-term QoL at T3 revealed a significant effect for the Hospital Anxiety and Depression Scale-Depression and FACIT Fatigue scale.

Self-perceived cognitive alterations are negatively associated with patients' overall QoL. As these troubles may already be present at baseline, oncology nurses should screen for the early signs of subjective cognitive complaints by use of PROMs, in order to refer the patient to proper intervention programs which may lead to an improved long-term QoL and faster reintegration into society.