Socio-economic deprivation and healthcare service use of young people with type 1 and type 2 diabetes.

AIM: Lower socio-economic status (SES) is linked to greater morbidity in people with young-onset type 2 (T2D) and type 1 diabetes (T1D). We assessed healthcare utilisation from this population and the impact of SES. METHODS: Retrospective analysis of 1,350 people with T2D and 731 with T1D diagnosed between 15-30 years of age referred to secondary diabetes services in Auckland, New Zealand. Primary care visits, referral to/attendance at diabetes clinics, and hospital admissions were recorded; their relationship to a validated national index of deprivation (NZDep) was assessed. RESULTS: The proportion with primary care attendance was similar in both groups with no significant variation with NZDep. For T2D, NZDep was a predictor of delayed referral (≧1-year post-diagnosis) to diabetes services, following adjustment for age and HbA1c in the year of diagnosis (OR 1.15 for every decile increase in NZDep, 95% CI 1.07-1.24, p=0.0003). The median number of appointments offered over a 2-year period was greater for T1D (2.0 (IQR 0, 7) vs (0 (IQR 0, 2), p<0.001); non-attendance increased with NZDep for T2D (p=0.016). The proportion with hospital admissions was similar in both groups and increased with NZDep (T1D p<0.001, T2D p=0.015). CONCLUSION: SES impacts several measures of healthcare utilisation. Current healthcare models are inadequately servicing people with young-onset T2D.

Socioeconomic status and risk factors for complications in young people with type 1 or type 2 diabetes: a cross-sectional study.

INTRODUCTION: Young people with type 2 diabetes (T2D) develop complications earlier than those with type 1 diabetes (T1D) of comparable duration, but it is unclear why. This apparent difference in phenotype could relate to relative inequality. RESEARCH DESIGN AND METHODS: Cross-sectional study of young people referred to secondary diabetes services in Auckland, Aotearoa-New Zealand (NZ): 731 with T1D and 1350 with T2D currently aged <40 years, and diagnosed between 15 and 30 years. Outcome measures were risk factors for complications (glycemic control, urine albumin/creatinine ratio (ACR), cardiovascular disease (CVD) risk) in relation to a validated national index of deprivation (New Zealand Deprivation Index (NZDep)). RESULTS: Young people with T2D were an average 3 years older than those with T1D but had a similar duration of diabetes. 71% of those with T2D were of Maori or Pasifika descent, compared with 24% with T1D (p<0.001). T1D cases were distributed evenly across NZDep categories. 78% of T2D cases were living in the lowest four NZDep categories (p<0.001). In both diabetes types, body mass index (BMI) increased progressively across the NZDep spectrum (p<0.002), as did mean glycated hemoglobin (HbA1c) (p<0.001), the prevalence of macroalbuminuria (p≤0.01), and CVD risk (p<0.001). Adjusting for BMI, diabetes type, and duration and age, multiple logistic regression revealed deprivation was the strongest risk factor for poorly controlled diabetes (defined as HbA1c >64 mmol/mol, >8%); OR 1.17, 95% CI 1.13 to 1.22, p<0.0001. Ordinal logistic regression showed each decile increase in NZDep increased the odds of a higher ACR by 11% (OR 1.11, 95% CI 1.06 to 1.16, p<0.001) following adjustment for BMI, blood pressure, diabetes type and duration, HbA1c, and smoking status. Multiple linear regression indicated a 4% increase in CVD risk for every decile increase in NZDep, regardless of diabetes type. CONCLUSIONS: The apparent more aggressive phenotype of young-onset T2D is at least in part explicable by relative deprivation.