aQ1- lowest marginalization quintile, least
marginalized; Q5- highest marginalization quintile, most marginalized.
Summary score including material deprivation, ethnic concentration and
residential instability domains is used.
bno admission in the year preceding surgery precludes
a calculation of the Charlson-Deyo comorbidity score
cPrior cancer within 5 years of diagnosis
dMIS – Minimally Invasive Surgery