Sacramento Area Latino Study on Aging
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The main objectives of this study were:
- To estimate the prevalence of dementia in older Hispanics,
- To explore the contribution of metabolic, vascular, socioeconomic, cultural and genetic factors to the incidence of dementia, cognitive decline, and depression and type 2 diabetes,
- To assess the overall health: cognitive, physical and social functions, in this understudies older, ethnic population,
- To examine the association between type 2 diabetes, metabolic syndrome, hypertension and obesity on cognitive and functional limitations over time.
Overview
- Acronym
- SALSA
- Investigators
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- Contacts
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General Design
- Study design
- Cohort
- Start - End Year
- 1999 - 2008
- General Information on Follow Up (profile, frequency)
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Participants were followed every 12 to 15 months, for a maximum of 6 follow-ups, via home visits that included clinical and cognitive assessments. Brief semi annual phone visits were also conducted.
- Recruitment Target
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- Individuals
- Number of Participants
- 1,789
- Number of Participants with Biological Samples
- 1,614
- Supplementary Information
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The main study was a cohort study design, however, a cross-sectional prevalence study design was used at baseline.
A number of substudies were done, including MRIs in demented, impact of dementia in caregiver health, and intergenerational studies.
Access
Availability of data and biosamples
| Possible Access to Data | |
| Possible Access to Biosamples | |
| Other |
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There are about 200 MRIs cases that should be approached by Dr. William Jagust at UC Berkeley.
Marker Paper
Haan, Mary N.; Mungas, Dan M.; Gonzalez, Hector M.; Ortiz, Teresa A.; Acharya, Ananth; Jagust, William J. (2003). "Prevalence of Dementia in Older Latinos: The Influence of Type 2 Diabetes Mellitus, Stroke and Genetic Factors." Journal of the American Geriatrics Society 51(2): 169-177.
PUBMED 12558712Supplementary Information
Timeline
Population
Selection Criteria
- Minimum age
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60
- Countries
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- United States of America
- Territory
- Sacramento Metropolitan Area and 6 surrounding suburban and rural counties in California
- Ethnic Origin
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- Latino/Hispanic
- Other Criteria
- Includes English or Spanish or native tribal speakers and living in a non-institutionalized setting
Sources of Recruitment
- General Population
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- Volunteer enrolment
- Selected sample
- Supplementary Information
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The first stage of the sampling involved identifying 1998 Census tracts in five contiguous counties and characterizing them by the percentage of eligible residents (aged 60 and Latino).
Because the recruitment occurred 8 years after the 1998 Census, a phone and address list was purchased of people aged 60 and over with Latino surnames in the target area. This list was used to identify census tract areas where there might have been a change in the eligible population since 1998 and to contact individuals in the selected census tracts. Participants were contacted in three stages: by mail, by phone, and, finally, by door-to-door neighborhood enumeration. Up to 10 attempts to contact the participant by telephone were allowed and up to five attempts at the household. Participants who contacted the study themselves were screened for eligibility, residence in a target census tract, and presence on the sampling list.
Sample Size
- Number of Participants
- 1,789
- Number of Participants with Biological Samples
- 1,614
Data Collection Events
| # | Name | Data sources | Data sources - Biosamples | Start | End |
|---|---|---|---|---|---|
| 0 | SALSA - Baseline |
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1998 (February) | 1999 (September) |
| 1 | SALSA - Follow-up 1 |
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1999 (June) | 2000 (July) |
| 2 | SALSA - Follow-up 2 |
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2000 (August) | 2001 (November) |
| 3 | SALSA - Follow-up 3 |
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2001 (August) | 2003 (May) |
| 4 | SALSA - Follow-up 4 |
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2002 (June) | 2005 (August) |
| 5 | SALSA - Follow-up 5 |
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2004 (October) | 2006 (August) |
| 6 | SALSA - Follow-up 6 |
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2006 (April) | 2007 (September) |
Participating Studies
| Acronym | Name | Study design | Countries |
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Harmonization Initiatives Included
| Acronym | Name |
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Datasets
| Name | Data Collection Events | Variables |
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Areas of Information Collected
- Socio-demographic and economic characteristics
- Death
- Lifestyle and behaviours
- Physical measures and assessments
- Birth, pregnancy and reproductive health history
- Laboratory measures
- Perception of health, quality of life, development and functional limitations
- Cognition, personality and psychological measures and assessments
- Diseases
- Life events, life plans, beliefs and values
- Symptoms and signs
- Preschool, school and work life
- Medication and supplements
- Social environment and relationships
- Non-pharmacological interventions
- Physical environment
- Health and community care services utilization
- Administrative information
Variables Content Summary
Areas of Information Collected
Areas of Information Collected per per Population and Data Collection Event
Networks
| Acronym | Name | Harmonization Initiatives | Individual Studies |
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