SATSA - Population
The SATSA population consists of a base sample of a selected subset of twins reared apart (TRA) from the Swedish Twin Registry (STR), and a control sample of twins reared together (TRT) also from the STR matched on gender, age, and county of birth.
Data Collection Event
SATSA - IPT1
Twin pairs who were over 50 years of age and had both responded to the initial questionnaire participated in the in-person testing (IPT) component, which included a health examination, blood sampling, interviews, and tests on functional capacity, cognitive abilities, and memory.
Participants completed a nutritional survey to allow computation of quantity and frequency measures of several nutrients.
Physical measures included: blood pressure, pulse, anthropometric measures, lung function, grip strength, physical performances measures for upper and lower body functional activity, validity for measuring activities of daily living (e.g. turn key in lock, pour glass of water). In addition, one series of tests was included to determine possible impairment of the cranial nerves.
The cognitive battery was designed to represent the domains of crystallized and fluid intelligence and memory. The battery included the Mini-Mental Status Exam; Information test, Synonyms test, Analogies test, Figure logic test, Block design test, Card rotation test, Digit span (Forward and Backward) test, Picture memory test, Names and faces test, Digit symbol test, and Figure identification test.
A fasting blood and a morning urine samples were also collected.