Depressive symptoms were observed in 1 out of 12 T1D children in a primary school and in 1 out of 5 teenagers. Depressive symptoms may affect metabolic control and quality of life. Therefore, early detection and treatment of depressive symptoms in T1D school children is needed.

The aim of this study was to evaluate the trends in the incidence of type 1 diabetes mellitus (DM) in children aged 0-14 years between 1987 and 1999 in three cities in Poland. The study area comprised the provinces of Cracow and Wroclaw and the city of Warsaw. The data were collected prospectively on the basis of the register within the framework of the EURODIAB study up till 1997 and then within the project of the Ministry of Health. During the 13 years of the study period, 766 children (380 girls, 386 boys) with newly diagnosed type 1 DM were identified. The overall age-standardized incidence rates were 8.4/100,000 standardized population/year (95% CI 7.4-9.3) for Cracow province, 6.5/100,000/year (95% CI 5.6-7.4) for Wroclaw province and 7.9/100,000/year (95% CI 6.9-8.8) for Warsaw. A significant trend of increase for children aged 0-14 years was found in the three cities. The analysis of the trend in age subgroups showed a significant increase in incidence in all three age subgroups in Warsaw and Cracow province (0-4 year-old children, p <0.05; 5-9 year-olds, p <0.001 in Cracow province, p <0.05 in Warsaw, and in 10-14 year-olds, p <0.05 in Cracow province, p <0.005 in Warsaw). In the Wroclaw province a significant increase was observed in children aged 0-4 years (p <0.05) and 5-9 years (p <0.001). In children aged 10-14 years the increase was not statistically significant. The results of our study showed that the incidence of type 1 DM in children is rising. A similar phenomenon is occurring in many other countries. The greatest increase of incidence was observed in the 5-9 year-old subgroup of children in Cracow and Wroclaw provinces and in children aged 10-14 years in Warsaw. The incidence rates in excess of 9.0/100,000 per year observed since 1996 have placed Poland in the group of countries with low to medium incidence.

Background Youth with type 1 diabetes (T1D) (16–18 y.o.) present worst disease control of all age groups and need structured interventions. Those should be based on unbiased, national‐scale outcomes, which have not yet been successfully assessed in Poland. Objective To evaluate the glycemic control in young patients with T1D in Poland. Method All pediatric diabetes care centers and the nine largest centers for adults with T1D were invited to this cross‐sectional study, conducted in March 2018. Eligibility was defined as age ≤ 30 years and diabetes duration ≥1 year. Blinded samples of capillary blood and clinical questionnaires were sent to coordinating center, where HbA1c was measured by high‐pressure liquid chromatography. Results Nine adult and 25/28 pediatric centers participated, providing data for 1255 patients (50.8% males), mean age 12.3 years (95%CI:12.1–12.6) for children and 23.2 years (22.9–23.6) for adults; mean diabetes duration 7.1 years (6.8–7.3). This covered ~8% of pediatric population and 2% of 18–30‐years‐olds with T1D. Mean HbA1c was comparable between children and adults (57 mmol/mol [7.4%], 95%CI:56‐57 mmol/mol [7.3–7.4%] vs. 57 mmol/mol [7.4%], 95%CI:56–60 mmol/mol [7.3–7.6%], p = 0.1870). Overall, 45.2% of patients achieved ISPAD target (<53 mmol/mol [<7.0%]). During the month preceding the study, 0.9% of patients experienced severe hypoglycemia and 0.4% suffered ketoacidosis. HbA1c was related to the method of insulin therapy, continuous glucose monitoring use and body weight (p < 0.0001). Conclusions In Polish children and young adults with T1D glycemic control expressed as HbA1c is promising in the light of ISPAD guidelines. Our results confirm the known associations between better glycemic control and the use of new technologies and maintaining optimal body weight.

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