Follow-up study within the Whitehall II study, selecting 800 participants for further neuropsychological, clinical and imaging (MRI) examinations to examine brain structure and function in relation to age-related diseases and the modifiable and non-modifiable factors affecting resilience against and vulnerability to adverse brain changes.
A total of 6035 civil servants participated in the WHII Phase 11 clinical examination in 2012-2013. A random sample of 800 of these participants was included in a sub-study comprising an MRI brain scan, a detailed clinical and cognitive assessment, and collection of blood and buccal mucosal samples for the characterisation of immune function and associated measures. Data collection for this sub-study started in 2012 and was completed by in 2016. The participants, for whom social and health records have been collected since 1985, were between 60-85 years of age at the time the MRI study started. The pre-specified clinical and cognitive assessment protocols, the state-of-the-art MRI sequences and latest pipelines for analyses of this sub-study have been published and are attached to this application.
Study Type
OBSERVATIONAL
Enrollment
800
University of Oxford
Oxford, England, United Kingdom
Neuropsychological measure 1
National Adult Reading Test (premorbid intellectual ability)
Time frame: 2012-2016
Neuropsychological measure 2
Montreal Cognitive Assessment (MoCA)
Time frame: 2012-2016
Neuropsychological measure 3
Rey Complex Figure copy and delayed recall (visual episodic memory)
Time frame: 2012-2016
Neuropsychological measure 4
Hopkins Verbal Learning Test Revised (verbal episodic memory)
Time frame: 2012-2016
Neuropsychological measure 5
CANTAB Simple and Choice Reaction Time (processing speed)
Time frame: 2012-2016
Neuropsychological measure 6
WAIS-R Digit Symbol Test (processing speed)
Time frame: 2012-2016
Neuropsychological measure 7
Trail Making Test A and B (processing speed/executive functioning)
Time frame: 2012-2016
Neuropsychological measure 8
WAIS-R Digit Span forward and backwards (executive functioning)
Time frame: 2012-2016
Neuropsychological measure 9
Graded Naming Test (semantic memory)
Time frame: 2012-2016
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MRI Measures 1
Siemens 3T - T1-weighted scan (MPRAGE) using FSL FIRST, FAST, and Freesurfer Volume extractions
Time frame: 2012-2016
MRI Measures 2
Siemens 3T - T1-weighted scan (MPRAGE) using FSL GLM Voxel based analysis for grey matter density analysis
Time frame: 2012-2016
MRI Measures 3
Siemens 3T - T2-weighted scan, clinical and FSL (BIANCA)-based rating of white matter changes
Time frame: 2012-2016
MRI Measures 4
Siemens 3T Diffusion Tensor Images analyzed with Tract Based Spatial Statistics (TBSS)
Time frame: 2012-2016
MRI Measures 5
Siemens 3T rs-fMRI analyzed with Multivariate Exploratory Linear Optimized Decomposition into Independent Components: MELODIC)
Time frame: 2012-2016