• L Backemar, A Wikman, T Djärv, A Johar, and P Lagergren.
• Surgical Care Science, Department of Molecular Medicine and Surgery, Karolinska Institute, Stockholm, Sweden. lovisa.backemar@ki.se.
• Br J Surg. 2016 Nov 1; 103 (12): 1665-1675.

BackgroundAlthough health-related quality of life (HRQoL) recovers after surgery for oesophageal cancer in most long-term survivors, one in seven patients experiences a deterioration in HRQoL for reasons yet unknown. The aim of this study was to assess whether co-morbidities diagnosed after surgery influence recovery of HRQoL.MethodsPatients who underwent surgery for cancer of the oesophagus or gastro-oesophageal junction in Sweden between 2001 and 2005 were included. HRQoL was assessed by means of the European Organization for Research and Treatment of Cancer QLQ-C30 and QLQ-OES18 questionnaires. Repeated-measures ANOVA was used to assess mean differences in HRQoL scores between three co-morbidity status groups (healthy, stable and increased) over time. Probabilities of deterioration in HRQoL were calculated based on marginal probabilities from logistic regression models.ResultsAt 5 years' follow-up, 153 (24·8 per cent) of 616 patients were alive and 137 responded to at least two of three questionnaires. The healthy and increased co-morbidity groups showed deterioration in almost all aspects of HRQoL at 6 months after surgery compared with baseline. The increased co-morbidity group also deteriorated in several aspects from 3 to 5 years after surgery. Patients with an increase in co-morbidity did not have a significantly increased probability of deterioration in HRQoL over time compared with healthy or stable patients, except with respect to cognitive function, loss of appetite, choking and coughing.ConclusionPatients with an increase in co-morbidities after oesophagectomy experience long-term deterioration in HRQoL.© 2016 BJS Society Ltd Published by John Wiley & Sons Ltd.

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