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Aim: To examine the association between early onset of type 2 diabetes mellitus (DM) and clinical and behavioural risk factors for later complications of diabetes. Methods: We conducted a cross-sectional study of 5115 persons with incident type 2 DM enrolled during 2010-2015 in the Danish Centre for Strategic Research in Type 2 Diabetes-cohort. We compared risk factors at time of diagnosis among those diagnosed at ≤45 years (early onset) with diagnosis age 46 to 55, 56 to 65 (average onset = reference), 66 to 75, and >75 years (late onset). Prevalence ratios (PRs) were computed by using Poisson regression. Results: Poor glucose control, ie, HbA1c ≥ 75 mmol/mol (≥9.0%) in the early-, average-, and late-onset groups was observed in 12%, 7%, and 1%, respectively (PR 1.70 [95% confidence intervals (CI) 1.27, 2.28] and PR 0.17 [95% CI 0.06, 0.45]). A similar age gradient was observed for severe obesity (body mass index > 40 kg/m 2: 19% vs. 8% vs. 2%; PR 2.41 [95% CI 1.83, 3.18] and 0.21 (95% CI 0.08, 0.57]), dyslipidemia (90% vs. 79% vs. 68%; PR 1.14 [95% CI 1.10, 1.19] and 0.86 [95% CI 0.79, 0.93]), and low-grade inflammation (C-reactive protein > 3.0 mg/L: 53% vs. 38% vs. 26%; PR 1.41 [95% CI 1.12, 1.78] and 0.68 [95% CI 0.42, 1.11]). Daily smoking was more frequent and meeting physical activity recommendations less likely in persons with early-onset type 2 DM. Conclusions: We found a clear age gradient, with increasing prevalence of clinical and behavioural risk factors the younger the onset age of type 2 DM. Younger persons with early-onset type 2 DM need clinical awareness and support.

BACKGROUND: Accurate and early identification of high-risk surgical patients with perforated peptic ulcer (PPU) is important for triage and risk stratification. The objective of the present study was to develop a new and improved clinical rule to predict mortality in patients following surgical treatment for PPU. METHODS: Design: nationwide cohort study based on prospectively collected data. Setting: thirty-five hospitals in Denmark. Patients: a total of 2668 patients surgically treated for gastric or duodenal PPU between 1 February 2003 and 31 August 2009. Outcome measure: 30-day mortality. RESULTS: We derived a new clinical prediction rule for 30-day mortality and evaluated and compared its prognostic performance with the American Society of Anaesthesiologists (ASA) and Boey scores. A total of 708 patients (27%) died within 30 days of surgery. The Peptic Ulcer Perforation (PULP) score - comprised eight variables with an adjusted odds ratio of more than 1.28: 1) age > 65 years, 2) active malignant disease or AIDS, 3) liver cirrhosis, 4) steroid use, 5) time from perforation to admission > 24 h, 6) pre-operative shock, 7) serum creatinine > 130 μM, and 8) the four levels of the ASA score (from 2 to 5). The score predicted mortality well (area under receiver operating characteristics curve (AUC) 0.83). It performed considerably better than the Boey score (AUC 0.70) and better than the ASA score alone (AUC 0.78). CONCLUSION: The PULP score accurately predicts 30-day mortality in patients operated for PPU and can assist in risk stratification and triage.

Objective. To assess the impact of obesity and diabetes on the risk of post-cesarean infections. Design. Prospective cohort study. Setting. Obstetric departments at three hospitals in Denmark. Population. 2,492 consecutive women having cesarean section (CS) from February 2007 to August 2008. Methods. We collected complete data from medical records and databases on CS, body mass index, diabetes (type 1, type 2, and gestational), and post-cesarean infections. Post-discharge infections diagnosed by general practitioners were ascertained through positive microbiological cultures and antibiotic prescriptions. Main outcome measures. Cumulative incidences of infections within 30 days after CS. Results. Of 2,492 women having CS, 373 (15.2%) were obese and 123 (4.9%) had diabetes. Overall, 458 women (18.4%) had a post-cesarean infection within 30 days and 174 (7.0%) were diagnosed in-hospital. The risk of post-cesarean infections was higher among obese than non-obese women: adjusted (for diabetes and emergency/elective CS) odds ratio (OR) = 1.43; 95% confidence interval (CI): 1.09-1.88, particularly for in-hospital infections (OR = 1.86; 95% CI: 1.28-2.72). After controlling for obesity and mode of CS, type 2 or gestational diabetes were weak predictors of infection risk (OR = 1.18; 95% CI 0.72-1.93), whereas the adjusted OR in women with type 1 diabetes was 1.65 (95% CI 0.64-4.25). Among diabetic women, obesity increased the risk of post-cesarean infections more than two-fold; the adjusted ORs were 2.06 (95% CI 1.13-3.75) for infections overall and 2.74 (95% CI: 1.25-6.01) for in-hospital infections. Conclusion. Obesity increases the risk of post-cesarean infections and diabetes further strengthens this association.