{
  "abstract": "Background Dementia is a growing public health challenge, with significant disparities in diagnosis rates across ethnic groups. Current evidence on ethnic differences in dementia prevalence and incidence is limited, particularly in specific minority subpopulations within the UK. This study aims to address these gaps by analyzing dementia diagnosis patterns using primary care data from Bradford, UK.Methods We utilized a dynamic cohort of adults aged ≥45 years from Connected Bradford, a routine data resource which includes over 700,000 individuals from a diverse population. Data spanning 2009–2019 were analyzed to estimate crude and adjusted incidence and prevalence across eight ethnic groups: White, Any Other White, South Asian, East Asian, Black African, Black Caribbean, Mixed ethnicity, and Other Ethnicity. Poisson regression models were used to calculate incidence rate ratios (IRRs), adjusting for age, sex, and Index of Multiple Deprivation (IMD) and to estimate adjusted incidence.Results There were 7,256 new dementia diagnoses during 2009–2019, with an incidence of 9.5 per 1,000 person-years at risk (PYAR). The adjusted incidence was highest among Black African people (9.8 per 1,000 PYAR) and Any Other White people (7.9 per 1,000 PYAR) and lowest among East Asian people (4.8 per 1,000 PYAR). Significant differences existed within ethnic minority subgroups, with South Asian people having greater age-sex adjusted incidence than East Asian people (5.5 vs. 4.8 per 1,000 PYAR), and Black African people having higher incidence than Black Caribbean people (9.8 vs. 7.3 per 1,000 PYAR), though Any Other White people had similar incidence to White people. Compared to the White ethnic group, dementia diagnosis incidence was significantly lower among South Asian (IRR=0.71, 95% CI: 0.63–0.81), East Asian (IRR=0.53, 95% CI: 0.28–0.89), and ‘Other’ ethnic background (IRR=0.53, 95% CI: 0.29–0.88) individuals. Mean age at diagnosis varied by ethnic group, with Black British, South Asian, and East Asian people having the lowest mean age (75.0, 75.1, 75.6, respectively), while survival times post-diagnosis varied across ethnicities.Conclusion Dementia incidence is lowest among Asian people and those from ‘Other’ ethnic backgrounds. Black and Asian people had younger average ages at diagnosis and mortality. This study highlights significant ethnic disparities in dementia diagnosis, suggesting potential underdiagnosis and delays in minority and socioeconomically deprived populations. Addressing these disparities requires improved diagnostic pathways, increased awareness, and culturally tailored strategies to ensure timely dementia diagnosis across all ethnic groups.",
  "authors": [
    {
      "affiliations": [
        "Academic Unit for Ageing and Stroke Research, Bradford Institute for Health Research, Bradford Teaching Hospitals NHS Fou, Bradford, UK",
        "Applied Research Collaboration Yorkshire and the Humber, NIHR, Leeds, UK"
      ],
      "name": "Lin Gong"
    },
    {
      "affiliations": [
        "Academic Unit for Ageing and Stroke Research, Bradford Institute for Health Research, Bradford Teaching Hospitals NHS Fou, Bradford, UK"
      ],
      "name": "Kate Best"
    },
    {
      "affiliations": [
        "Academic Unit for Ageing and Stroke Research, Bradford Institute for Health Research, Bradford Teaching Hospitals NHS Fou, Bradford, UK",
        "Applied Research Collaboration Yorkshire and the Humber, NIHR, Leeds, UK"
      ],
      "name": "Magda Jordão"
    },
    {
      "affiliations": [
        "Academic Unit for Ageing and Stroke Research, Bradford Institute for Health Research, Bradford Teaching Hospitals NHS Fou, Bradford, UK"
      ],
      "name": "Rebecca Hawkins"
    },
    {
      "affiliations": [
        "Academic Unit for Ageing and Stroke Research, Bradford Institute for Health Research, Bradford Teaching Hospitals NHS Fou, Bradford, UK",
        "Applied Research Collaboration Yorkshire and the Humber, NIHR, Leeds, UK"
      ],
      "name": "Andrew Clegg"
    }
  ],
  "title": "P59 Disparities in dementia diagnosis rates in ethnic groups: analysis of primary care data in Bradford, UK",
  "uid": "51164428-7ed0-511d-997e-60b8fdcde71a"
}