The impact of the COVID-19 pandemic on the health of adults with intellectual impairment: evidence from two longitudinal UK surveys

Background People with an intellectual impairment experience high levels of social and health inequalities. We investigated the impact of COVID-19 on the physical and mental health of people with intellectual impairment, controlling for demographic risk, socio-economic circumstances and pre-pandemic health levels. Method Data were drawn from two UK birth cohorts that surveyed their participants on the impact of COVID-19 in May 2020: the Millennium Cohort Study (20-year-old participants) and the British Cohort Survey (50-year-old participants). Health outcomes (COVID-19 infection, COVID-19 symptoms, self-reported physical health, mental health, health service use and impact on health behaviours) were compared between people with and without intellectual impairment, adjusting for gender and ethnicity. Differences were further adjusted for self-reported health pre-pandemic and the impact of COVID-19 on socio-economic circumstances. Results Controlling for gender and ethnicity, poor health was reported less often by younger adults [relative risks (RR): 0.44 95% confidence interval (CI) 0.23, 0.86] and more often by older adults (RR: 1.99 95% CI 1.45, 2.73) with intellectual impairment compared with peers. Older adults were also more likely to experience fever and loss of taste/smell. Adjusting for pre-pandemic health and socio-economic circumstances eliminated some differences in the older cohort, but not in the younger one. Conclusion In young adulthood, the impact of COVID-19 on health outcomes was not negative. The pattern was reversed in later adulthood, although differences were mostly eliminated after adjustment suggesting a socio-economic and age gradient of COVID-19 impacts on intellectual impairment.

Automated summary

The study found that individuals with intellectual impairment were more likely to report poor health outcomes during COVID-19, especially in older age groups. Adjusting for pre-pandemic health and socio-economic circumstances reduced some differences, but not completely in younger adults. This suggests a socio-economic and age gradient in the impacts of COVID-19 on individuals with intellectual impairment.