The ZARADEMP project (ZARAgoza DEMentia
DEPression project) was designed as a longitudinal,
community-based study to examine the incidence
of dementia and the risk factors in incident cases of
dementia. It was carried out in Zaragoza, a typical,
large city in Spain, with an important proportion
of inhabitants coming from surrounding rural
areas (12). A stratified random sample of individuals
55 years of age and older, with proportional
allocation by age and sex, drawn from the eligible
individuals (n = 157 787) in the Spanish official
census lists of 1991, was invited to participate in
the baseline examination.

The Nurses’ Health Study II (NHS II) was established by Dr. Walter Willett and colleagues in 1989 with funding from the National Institutes of Health to study oral contraceptives, diet, and lifestyle risk factors in a population younger than the original NHS cohort.

Why a new cohort of nurses?
This younger generation of nurses included women who started using oral contraceptives during adolescence and were thus maximally exposed during their early reproductive life. Several case-control studies suggesting such exposures might be associated with substantial increases in breast cancer risk provided a particularly strong justification for investment in this large cohort. Researchers also planned to collect detailed information on the types of oral contraceptives used, which was not obtained in the Nurses’ Health Study.

In addition, NHS II obtained information on physical activity and diet in adolescence and early adult life.

The VLS is a long-term, large-scale, and multi-faceted longitudinal investigation of human aging. Incorporating biomedical approaches, leading-edge technologies, and epidemiological perspectives, the VLS evaluates and tracks actual cognitive, health, functional and lifestyle trajectories leading to outcomes that can be classified as normal, resilient, exceptional, impaired, or dementia. Our studies examine these differential brain and cognitive changes as a function of interactions among multiple “biomarkers” of both risk and protection. Among these dynamically interacting biomarkers are those representing selected aspects of biological, health, genetic, metabolic, vascular, lifestyle, physical fitness, cognitive activity, sex/gender, and demographic domains

The MemoVie cohort study aims to investigate the living conditions or risk factors under which the normal cognitive capacities of the senior population in Luxembourg (? 65?year-old) evolve (1) to mild cognitive impairment (MCI) ? transitory non-clinical stage ? and (2) to AD. Identifying MCI and AD predictors undeniably constitutes a challenge in public health in that it would allow interventions which could protect or delay the occurrence of cognitive disorders in elderly people. In addition, the MemoVie study sets out to generate hitherto unavailable data, and a comprehensive view of the elderly population in the country.

A 1-year follow-up was included in the original design of the study. The enrolled participants have been followed-up.

A family-based cohort study that is embedded in the Genetic Research in Isolated Populations (GRIP) program in the South West of the Netherlands. The aim of this program was to identify genetic risk factors in the development of complex disorders. For the ERF study, 22 families that had at least five children baptized in the community church between 1850-1900 were identified with the help of genealogical records. All living descendants of these couples and their spouses were invited to take part in the study. Data collection started in June 2002 and was finished in February 2005 (n=2065).

Convenience sample of centenarians, their siblings, offspring, spouses and a control sample consisting of people born around same time as offspring but who do not have parents surviving beyond average life expectancy for their birth cohort. Age range 40-119 years, with ~2500 centenarians in the sample including 600 semi-supercentenarians (ages 105-109) and 200 supercentenarians (ages 110+ years).

We collect the below listed data at enrolment and then collect vital status, hospitalization, changes in meds and diagnoses, cognitive function (TICS) and physical function (IADS, ADL) over the phone, annually. Local subjects are asked to undergo annual detailed cognitive function testing in person with ultimately, brain donation. Blood sample collected at enrolment for DNA, RNA and plasma for biomarkers and storage.

Study is open to collaborations. Please contact Dr. Perls

The Nurses’ Health Study is a longitudinal population study aimed initially to examine the relation between the use of oral contraceptives, cigarette smoking, and risk of major illnesses in women, mainly cancer and cardiovascular diseases. Since then, the study broadened to include the evaluation of health consequences of many lifestyle practices, including diet, physical activity, and specific forms of hormone therapy.

The participants are registered nurses, aged 30 to 55 years and married at the time of recruitment in 1976, and who lived in the 11 most populous states (California, Connecticut, Florida, Maryland, Massachusetts, Michigan, New Jersey, New York, Ohio, Pennsylvania and Texas).

In 1999 the Swedish Ministry for Social Affairs promoted and supported a national project aimed at monitoring and evaluating the care-of-the-elderly system in Sweden. To achieve these aims, four longitudinal individual-based data collection describing the aging process and encompassing the care system as whole, has been initiated. This project was named The Swedish National study on Aging and Care (SNAC).

SNAC-K is conducted by the Stockholm Gerontology Research Center in collaboration with Aging Research Center (ARC), Karolinska Institutet.

SNAC-K includes two studies: SNAC-K population study and SNAC-K care system study.

The Kungsholmen Project is a longitudinal population-based study on ageing and dementia, carried out by the Stockholm Gerontology Research Center in collaboration with Aging Research Center (ARC), Karolinska Institutet.

The project, which started in 1987, has gathered a 12-year long database and offers information on aging from a multidisciplinary perspective. All persons that were born before 1913 and lived in the Kungsholmen district of Stockholm, were invited to participate (a total of 2368 persons on October 1st, 1987, including both community-dwelling and institutionalized persons). Later, the research additionally included all 90+ old subjects living in the St. Göran parish, an adjacent geographical area. The baseline phase and four follow-ups have been completed, with the last phase concluding in the summer of 2000. Time 1 was the only measurement occasion when a two-phase study design was adopted, with an extensive clinical examination performed after a screening phase. At every other occasion, all participants were interviewed by nurses, clinically examined by physicians, and assessed by psychologists.

Since 1993 the EAS has used systematic recruiting methods to assemble a cohort of over 2,200 elderly individuals from the Bronx, 26% of whom are African American. The EAS sample is broadly representative of the elderly population in one of the poorest and most racially and ethnically diverse urban counties in the United States.

The EAS has developed, tested, and applied strategies designed to meet the recruitment and retention challenges that may arise when conducting research studies with older adults. In 2004, the EAS began using the Registered Voter Lists (RVL) for Bronx County for continuous recruitment efforts. Individuals of at least 70 years of age, Bronx residents, non-institutionalized and English speaking are randomly selected from updated RVL and sent a letter followed by a screening telephone call. Persons who complete the telephone screening battery and agree to participate in clinical follow-up are invited to enroll. Continuing enrollment has resulted in over 2200 participants by 2017.