Age-related features of cancer incidence in Omsk and Orenburg Regions

Aim. To assess the age-related cancer incidence in Omsk and Orenburg Regions.

Materials and Methods. We analysed the statistical reports (form 7) obtained from the health authorities of Omsk and Orenburg Regions from 2010 to 2019.

Results. Age-specific indicators of cancer incidence in the indicated regions differed significantly (р < 0.001). In the Omsk Region, cancer incidence showed a 65-fold increase with age (from 20 to 79 years), reaching the maximum values at the age of 75-79 years and then decreasing in subjects > 80 years of age (p < 0.05). In the Orenburg region, age-related incidence rates increased 95-fold from 20 to 79 years, reaching a maximum level in the age group of 70-79 years, that was also followed by a decrease in the population over 80 years of age (p < 0.05). Trends in cancer incidence in Omsk and Orenburg Regions were similar to those in Russia, yet the rate was 1.4-1.8-fold lower. Cancer incidence in both regions had a moderate upward trend (increment of 1.2% and 1.5%, respectively; p < 0.001). The highest increase in cancer incidence was detected in subjects between 30 and 39 years and over 80 years of age (Omsk and Orenburg Regions, increment of 1.4% and 2.5%; 1.3% and 1.3%, respectively; p < 0.001).

Conclusions. Cancer incidence in the Orenburg Region significantly exceeds that in the Omsk region, yet both of the regions are characterised by the specific trends. We found the most significant increase in cancer incidence in subjects > 80 years of age over the last decade, which was more pronounced in the Omsk Region in comparison with the Orenburg Region.

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