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Background The recent World Health Organization (WHO) blueprint for dementia research and Lancet Commission on ending stigma and discrimination in mental health has identified a gap around dementia-related measures of stigma and discrimination that can be used in different cultural, language and regional contexts. Aims We aimed to characterise experiences of discrimination, and report initial psychometric properties of a new tool to capture these experiences, among a global sample of people living with dementia. Method We analysed data from 704 people living with dementia who took part in a global survey from 33 different countries and territories. Psychometric properties were examined, including internal consistency and construct validity. Results A total of 83% of participants reported discrimination in one or more areas of life, and this was similar across WHO Regions. The exploratory factor analysis factor loadings and scree plot supported a unidimensional structure for the Discrimination and Stigma Scale Ultra Short for People Living with Dementia (DISCUS-Dementia). The instrument demonstrated excellent internal consistency, with most of the construct validity hypotheses being confirmed and qualitative responses demonstrating face validity. Conclusions Our analyses suggest that the DISCUS-Dementia performs well with a global sample of people living with dementia. This scale can be integrated into large-scale studies to understand factors associated with stigma and discrimination. It can also provide an opportunity for a structured discussion around stigma and discrimination experiences important to people living with dementia, as well as planning psychosocial services and initiatives to reduce stigma and discrimination.

Background A core element of the Strengthening Responses to Dementia in Developing Countries (STRiDE) programme was to generate novel data on the prevalence, cost and impact of dementia in low- and middle-income countries, to build better health policy. Indonesia and South Africa are two middle-income countries in need of such data. Aims To present the STRiDE methodology and generate estimates of dementia prevalence in Indonesia and South Africa. Method We conducted community-based, single-phase, cross-sectional studies in Indonesia and South Africa, randomly sampling participants aged 65 years or older in each country. Dementia prevalence rates for each country were generated by using the 10/66 short schedule and applying its diagnostic algorithm. Weighted estimates were calculated with national sociodemographic data. Results Data were collected between September and December 2021 in 2110 people in Indonesia and 408 people in South Africa. The adjusted weighted dementia prevalence was 27.9% (95% CI 25.2–28.9) in Indonesia and 12.5% (95% CI 9.5–16.0) in South Africa. Our results indicate that there could be >4.2 million people in Indonesia and >450 000 people in South Africa who have dementia. Only five participants (0.2%) in Indonesia and two (0.5%) in South Africa had been previously diagnosed with dementia. Conclusions Despite prevalence estimates being high, formal diagnosis rates of dementia were very low across both countries (