Abstract
Background
Population ageing is a relevant concern in people diagnosed with rectal cancer. This study evaluates the adherence to clinical practice guidelines (CPGs) and patient outcomes in rectal cancer, with a particular focus on variation according to age.
Methods
This is a multicentre retrospective cohort study of all patients surgically treated for the first time for primary rectal cancer with curative intent in public hospitals in Catalonia during two study periods: first, with data from 2005 to 2007, and then with data from 2011 to 2012. We obtained the study data through a comprehensive review of patients' clinical records. Information on diagnosis, treatment and follow-up was collected and then compared with the relevant CPGs. We then performed a descriptive analysis of the categorical variables followed by a univariate and multivariate logistic regression analysis to calculate the odds ratio. Finally, we calculated the recurrence and death rates per person-year at 2 years' follow-up.
Results
In total, 3770 people were included in this study. The participants aged 70 and under were more likely to receive neoadjuvant therapy than those aged over 80 (2005/2007, 63 vs 17.4% p < 0.001; 2011/2012, 72 vs 41.1% p < 0.001); however, in the second study period there was less imbalance between the two groups in this regard, showing improved administration of neoadjuvant therapy in the elderly. The quality of surgery was suboptimal in a larger proportion of the elderly population, and the choice of surgical technique was dependent to some extent on the age of the participant. Recurrence and survival rates were significantly better in the second study period.
Conclusions
Compared to younger patients, the most elderly were less likely to receive the recommended adjuvant treatment, laparoscopy and total mesorectal excision. However, we observed improved adherence to the recommended treatment regimen in the most elderly participants, resulting in decreased recurrence and increased survival rates in this population.
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