Table 2

Eligibility screening assessments

Informed consentFace-to-face at participant’s home or at the University of Birmingham
General Health Questionnaire

  1. Telephone call or at participant’s home or at the University of Birmingham

  2. Answering ‘yes’ to any question outlined in the exclusion criteria shown in table 1

Mini-Mental State Exam

  1. At participant’s home or at the University of Birmingham

  2. A score <23

Venous blood draw to assess serum 25(OH)D status

  1. At participant’s home or at the University of Birmingham

  2. Serum 25(OH)D<30 nmol/L

Physical activity monitoring (accelerometry)

  1. At participant’s home or at the University of Birmingham

  2. A descriptive to be used during stratification