David A. Snowdon

ORCID: 0000-0003-2041-3120
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About
Contact & Profiles
Research Areas
  • Dementia and Cognitive Impairment Research
  • Alzheimer's disease research and treatments
  • Occupational Therapy Practice and Research
  • Nursing Roles and Practices
  • Emergency and Acute Care Studies
  • Nutritional Studies and Diet
  • Geriatric Care and Nursing Homes
  • Counseling Practices and Supervision
  • Health Systems, Economic Evaluations, Quality of Life
  • Chronic Disease Management Strategies
  • Interprofessional Education and Collaboration
  • Frailty in Older Adults
  • Hip and Femur Fractures
  • Health disparities and outcomes
  • Innovations in Medical Education
  • Nutrition and Health in Aging
  • Healthcare Policy and Management
  • Patient Satisfaction in Healthcare
  • Healthcare Operations and Scheduling Optimization
  • Primary Care and Health Outcomes
  • Stroke Rehabilitation and Recovery
  • Aging and Gerontology Research
  • Health, psychology, and well-being
  • Trauma and Emergency Care Studies
  • Palliative Care and End-of-Life Issues

Monash University
2019-2025

La Trobe University
2016-2025

Peninsula Health
2019-2025

Frankston Hospital
2020-2024

Australian Regenerative Medicine Institute
2021-2024

Hochschule Osnabrück
2024

National Ageing Research Institute
2024

University of Toronto
2022

Eastern Health
2015-2021

University of South Australia
2020

<h3>Objective.</h3> —To determine the relationship of brain infarction to clinical expression Alzheimer disease (AD). <h3>Design.</h3> —Cognitive function and prevalence dementia were determined for participants in Nun Study who later died. At autopsy, lacunar larger infarcts identified, senile plaques neurofibrillary tangles neocortex quantitated. Participants with abundant some classified as having met neuropathologic criteria AD. <h3>Setting.</h3> —Convents Midwestern, Eastern, Southern...

10.1001/jama.1997.03540340047031 article EN JAMA 1997-03-12

Handwritten autobiographies from 180 Catholic nuns, composed when participants were a mean age of 22 years, scored for emotional content and related to survival during ages 75 95. A strong inverse association was found between positive in these writings risk mortality late life (p < .001). As the quartile ranking emotion early increased, there stepwise decrease resulting 2.5-fold difference lowest highest quartiles. Positive early-life strongly associated with longevity 6 decades later....

10.1037/0022-3514.80.5.804 article EN Journal of Personality and Social Psychology 2001-01-01

In Reply. —The analyses of Drs Mirra and Gearing indicate that brain infarcts are not associated with NFTs in the neocortex. Our also indicated were number NFTs, senile plaques, or neuritic plaques neocortex, suggesting AD lesions likely to have occured independently each other. While infarction may represent separate disease processes, their combination nonetheless increase likelihood dementia will occur. Among participants our study who met neuropathologic criteria for (ie, abundant some...

10.1001/jama.1997.03550020046024 article EN JAMA 1997-07-09

<h3>Objective.</h3> —To determine if linguistic ability in early life is associated with cognitive function and Alzheimer's disease late life. <h3>Design.</h3> —Two measures of life, idea density grammatical complexity, were derived from autobiographies written at a mean age 22 years. Approximately 58 years later, the women who wrote these participated an assessment function, those subsequently died evaluated neuropathologically. <h3>Setting.</h3> —Convents United States participating Nun...

10.1001/jama.1996.03530310034029 article EN JAMA 1996-02-21

The development of interventions designed to delay the onset dementia highlights need determine neuropathologic characteristics individuals whose cognitive function ranges from intact demented, including those with mild impairments. We used Braak method staging Alzheimer's disease pathology in 130 women ages 76-102 years who were participants Nun Study, a longitudinal study aging and disease. All had complete autopsy data free conditions other than lesions that could affect function....

10.1002/ana.10161 article EN Annals of Neurology 2002-04-23

The Nun Study is a longitudinal study of 678 Catholic sisters 75 to 107 years age who are members the School Sisters Notre Dame congregation. Data collected for this include early and middle-life risk factors from convent archives, annual cognitive physical function evaluations during old age, postmortem neuropathologic participants' brains. case histories presented centenarian was model healthy aging, 92-year-old with dementia clinically significant Alzheimer disease neuropathology vascular...

10.7326/0003-4819-139-5_part_2-200309021-00014 article EN Annals of Internal Medicine 2003-09-02

Findings described in this report are for 6,763 white male Seventh-day Adventists who completed a dietary questionnaire 1960. Between 1960 and 1980 mortality data were collected on cohort members. Overweight men had significantly higher risk of fatal prostate cancer than near their desirable weight. The predicted relative was 2.5 overweight men. Suggestive positive associations also seen between the consumption milk, cheese, eggs, meat. There an orderly dose-response each four animal...

10.1093/oxfordjournals.aje.a113886 article EN American Journal of Epidemiology 1984-08-01

The relation between age at natural menopause and all-cause mortality was investigated in a sample of 5,287 White women, ages 55 to 100 years, naturally-postmenopausal, Seventh-day Adventists who had completed mailed questionnaires 1976. age-adjusted odds ratio death during 1976-82 women with before 40 1.95 (95% confidence interval = 1.24, 3.07), compared the reference group reporting 50 54. Corresponding ratios were 1.39 CI 1.06, 1.81) for 44, 1.03 0.84, 1.25) 45 49. Among 3,166 White, 55-...

10.2105/ajph.79.6.709 article EN American Journal of Public Health 1989-06-01

<b><i><i>Objective:</i></i></b> To determine whether hippocampal volume is a sensitive and specific indicator of Alzheimer neuropathology, regardless the presence or absence cognitive memory impairment. <b><i><i>Methods:</i></i></b> Postmortem MRI scans were obtained for first 56 participants Nun Study who scanned. The area under receiver operating characteristic curves, sensitivity, specificity, positive negative predictive values used to assess diagnostic accuracy in predicting fulfillment...

10.1212/wnl.58.10.1476 article EN Neurology 2002-05-28

Sister Mary, the gold standard for Nun Study, was a remarkable woman who had high cognitive test scores before her death at 101 years of age. What is more that she maintained this status despite having abundant neurofibrillary tangles and senile plaques, classic lesions Alzheimer's disease. Findings from Mary all 678 participants in Study may provide unique clues about etiology aging disease, exemplify what possible old age, show how clinical expression some diseases be averted.

10.1093/geront/37.2.150 article EN The Gerontologist 1997-04-01

To examine the prevalence of dementia associated with having a smaller brain, lower education or both these characteristics, 294 Catholic sisters were assessed annually for dementia. Sixty participants died and their brains evaluated to determine fulfillment neuropathological criteria Alzheimer's disease (AD). Lower educational attainment interaction head circumference presence dementia, controlling age one more apolipoprotein E-epsilon 4 alleles. By contrast, neither low nor was...

10.1076/jcen.25.5.671.14584 article EN Journal of Clinical and Experimental Neuropsychology 2003-06-25

We propose the hypothesis that a vegetarian diet reduces risk of developing diabetes. Findings have generated this are from population 25,698 adult White Seventh-day Adventists identified in 1960. During 21 years follow-up, diabetes as an underlying cause death was approximately one-half for all US Whites. Within male Adventist population, vegetarians had substantially lower than non-vegetarians or contributing death. both and female populations, prevalence self-reported also...

10.2105/ajph.75.5.507 article EN American Journal of Public Health 1985-05-01

Associations between fatal colon or colorectal cancer and frequency of use meat, cheese, milk, eggs, green salad, coffee, as well percent desirable weight, are described with the 21 years follow-up for 25,493 white California Seventh-Day Adventists. presented in terms relative risk (RR) heavy light exposure versus rare exposure. There were no clear relationships evident rectal salad use. Egg was positively associated both males (RR = 1.6) females 1.7). Coffee mortality females, particularly...

10.1093/jnci/74.2.307 article EN JNCI Journal of the National Cancer Institute 1985-02-01

The potential of early interventions for dementia has increased interest in cognitive impairments less severe than dementia. However, predictors the trajectory from intact cognition to have not yet been clearly identified. purpose this study was determine whether known risk factors mild or progression A polytomous logistic regression model used, with parameters governing transitions within transient states (intact cognition, impairments, global impairment) estimated separately transition...

10.1093/aje/kwm085 article EN American Journal of Epidemiology 2007-04-02

Clinical supervision is recommended for allied health professionals the purpose of supporting them in their professional role, continued development and ensuring patient safety high quality care. The aim this mixed methods study was to explore professionals' perceptions about aspects clinical that can facilitate effective supervision.Individual semi-structured interviews were conducted on a purposive sample 38 working metropolitan public hospital. Qualitative analysis completed using an...

10.1186/s12913-019-4873-8 article EN cc-by BMC Health Services Research 2019-12-31
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