99% of cases of upper gastrointestinal cancer (oesophagus, stomach, pancreas) occur over in patients over 40 years old
over 90% of gastric cancers occur in patients over 55 years old
incidence is strongly related to age, with the highest incidence rates being in older men and women. In the UK between 2009 and 2011, an average of 51% cases were diagnosed in men and women aged 75 and over
with respect to stomach cancer:
age-specific incidence rates rise sharply from around age 60-64, peak in the 85-89 age group, and subsequently drop in those aged 90+. Incidence rates are higher for males than for females in those aged 40-44 and over (in the younger age groups the sex difference is not significant) and this gap is widest at the ages of 65 to 69, when the male:female incidence ratio of age-specific rates (to account for the different proportions of males to females in each age group) is around 28:10
with respect to oesophageal cancer:
age-specific incidence rates rise sharply from around age 45-49 years, with the highest rates in the 90+ age group (2)
incidence rates are higher for males than females from age 30-34, with no significant differences at younger ages
gap is widest at the ages of 40-44, when the male:female ratio of age-specific incidence rates (to account for the different proportions of males to females in each age group) is around 37:10
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