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Walk the evidence base by book and chapter — the raw source passages that ground Ask, Differential, and the rest.

• A call for standardised age-disaggregated health data.1 passage
• Assessment of common infections and incident dementia using UK primary and secondary care data: a historical cohort study.1 passage
• Association between Clinical Frailty Scale score and hospital mortality in adult patients with COVID-19 (COMET): an international, multicentre, retrospective, observational cohort study.1 passage
• Association between HIV and incident pulmonary hypertension in US Veterans: a retrospective cohort study.1 passage
• Characterising the relationships between physiological indicators and all-cause mortality (NHANES): a population-based cohort study.1 passage
• Circadian disturbances in Alzheimer's disease progression: a prospective observational cohort study of community-based older adults.1 passage
• Comparison of the predictive accuracy of multiple definitions of cognitive impairment for incident dementia: a 20-year follow-up of the Whitehall II cohort study.1 passage
• Computerised cognitive remediation to enhance mobility in older adults: a single-blind, single-centre, randomised trial.1 passage
• Effect of competing mortality risks on predictive performance of the QRISK3 cardiovascular risk prediction tool in older people and those with comorbidity: external validation population cohort study.1 passage
• Effect of selenium supplementation on musculoskeletal health in older women: a randomised, double-blind, placebo-controlled trial.1 passage
• Effects of apolipoprotein B on lifespan and risks of major diseases including type 2 diabetes: a mendelian randomisation analysis using outcomes in first-degree relatives.1 passage
• Evolution and effects of COVID-19 outbreaks in care homes: a population analysis in 189 care homes in one geographical region of the UK.1 passage
• Factors associated with SARS-CoV-2 infection and outbreaks in long-term care facilities in England: a national cross-sectional survey.1 passage
• Frailty measurement, prevalence, incidence, and clinical implications in people with diabetes: a systematic review and study-level meta-analysis.1 passage
• Global, regional, and national burden of bone fractures in 204 countries and territories, 1990-2019: a systematic analysis from the Global Burden of Disease Study 2019.1 passage
• Immunogenicity of single vaccination with BNT162b2 or ChAdOx1 nCoV-19 at 5-6 weeks post vaccine in participants aged 80 years or older: an exploratory analysis.1 passage
• Incidence of SARS-CoV-2 infection according to baseline antibody status in staff and residents of 100 long-term care facilities (VIVALDI): a prospective cohort study.1 passage
• Mapping physical access to health care for older adults in sub-Saharan Africa and implications for the COVID-19 response: a cross-sectional analysis.1 passage
• Metformin and risk of mortality in patients hospitalised with COVID-19: a retrospective cohort analysis.1 passage
• Observed and expected serious adverse event rates in randomised clinical trials for hypertension: an observational study comparing trials that do and do not focus on older people.1 passage
• Polypharmacy-associated risk of hospitalisation among people ageing with and without HIV: an observational study.1 passage
• Pre-pandemic psychiatric disorders and risk of COVID-19: a UK Biobank cohort analysis.1 passage
• Profile of humoral and cellular immune responses to single doses of BNT162b2 or ChAdOx1 nCoV-19 vaccines in residents and staff within residential care homes (VIVALDI): an observational study.1 passage
• Reinfection with new variants of SARS-CoV-2 after natural infection: a prospective observational cohort in 13 care homes in England.1 passage
• Residential context and COVID-19 mortality among adults aged 70 years and older in Stockholm: a population-based, observational study using individual-level data.1 passage
• Targeting the biology of ageing with mTOR inhibitors to improve immune function in older adults: phase 2b and phase 3 randomised trials.1 passage
• The potential of rapalogs to enhance resilience against SARS-CoV-2 infection and reduce the severity of COVID-19.1 passage
• The use of linked routine data to optimise calculation of the Hospital Frailty Risk Score on the basis of previous hospital admissions: a retrospective observational cohort study.1 passage
• Urinary peptidomic profiles to address age-related disabilities: a prospective population study.1 passage