Cognitive function, physical function, and mental health in older adults amid reduced primary and specialist healthcare service use during COVID-19: the HUNT study

COVID-19 containment measures reduced older adults' healthcare access, with uncertain long-term effects on cognitive, physical, and mental health. To investigate whether reductions in primary and specialist healthcare service use during the pandemic were associated with changes in cognitive, physical, and mental health in community-dwelling older adults, with attention to sex differences. Data from the Norwegian Trøndelag Health Study collected before (HUNT4 70 + , 2017-2019) and after the pandemic (HUNT AiT, 2021-2023) included 5387 participants (53% women) aged 70 + . Propensity score matching, accounting for baseline confounders, was used to examine associations between reduced healthcare service use and cognitive, physical, and mental health changes from pre- to post-pandemic. Reduced contact with general practitioners was associated with greater cognitive decline among women (MoCa-change - 0.32 [95% CI - 0.62, - 0.32]). No differences were observed in physical or mental health. Reductions in other primary care services (e.g., in-home nursing, practical assistance) were associated with greater decline in cognitive function (MoCa-change - 0.94 [- 1.53, - 0.36]), particularly among men (MoCa-change - 2.12 [- 3.13, - 1.11]). Men also had a decline in physical function (SPPB-change - 1.06 [- 1.79, - 0.33]). No differences in mental health were observed. Reductions in specialist healthcare services were unrelated to health changes in the overall sample but linked to improved physical function in women (SPPB-change 0.32 [0.11, 0.53]). Although associations between reduced healthcare service use during the pandemic and cognitive, physical, and mental health were limited, findings highlight the importance of sustaining access to primary care for older adults during public health crises.Trial registration The study is pre-registered at ClinicalTrials.gov 02.02.2021, with the identification number NCT04792086.