Abstract
Nonspecific ulcerative colitis is a chronic inflammatory bowel disease of an immune nature with frequent localization in the large intestine. A pattern is noted that in the northern and western continents they suffer more often than in Asia. To identify risk factors in a population, epidemiological studies must firstly assess the incidence of disease. Aim. To study the trends of nonspecific ulcerative colitis (NUC) incidence in Kazakhstan. Material and methods. The research material was compiled summary reporting form number 12 of the Ministries and the Health of the Republic of Kazakhstan on new cases of nonspecific ulcerative colitis (ICD-10 – K51), established for the first time. A retrospective study was used as the main method for studying the incidence of NUC. According to generally accepted methods of biomedical statistics, extensive, intensive and equalized indicators of the incidence of NUC were calculated. Results and discussion. For 2013-2018 14,079 new cases of NUC were registered in the republic, of which 15 were in children – 15.3%, teenagers – 4.8% and adults – 79.8%. The average annual incidence rate of NUC in the entire population of Kazakhstan was 13.5±2.10/0000 (95% CI=9.4-17.50/0000), and for population groups having been studied was: in children – 7.2±2.10/0000 (95%CI=3.8-12.00/0000), among teenagers – 18.7±5.00/0000 (95% CI=9.0-28.50/0000) and the adult population 15.4±1.90/0000 (95% CI=11.8-19.10/0000). The difference in morbidity between groups was statistically significant. Disease tended to decrease in all age groups: in the adult population (Т=−12.3%), children (Т=−43.7%) and in adolescents (T=-50.1%). Conclusion. According to the dynamics, NUC incidence in Kazakhstan has a decreased tendency due to the child and adolescent population. The results obtained are recommended to be taken into account by health authorities when making managerial decisions. Keywords: nonspecific ulcerative colitis, morbidity, trends, Kazakhstan.