Table 1 Measurements in the Qatar Biobank pilot study

Heath and lifestyle questionnaire

Questions on socio-demographic factors, current and past health conditions, current and past smoking habits (tobacco and shisha), occupation, mobile phone use, activity levels, sleeping patterns, and cognitive and psychological state

Diet questionnaire

Any past modifications to their diet and how often they consumed various foods and beverages over the preceding year

Nurse interview questionnaire

Previous or prevalent health conditions they or their family members may have suffered from; information on over-the-counter and prescription medications used and, in women only, reproductive factors

Cognitive function

Paired-associated learning questions to assess global cognition.

Reaction time tests for touch screen administration

Anthropometry and body composition

Height, weight, waist circumference, and hip circumference

Bioimpedance analysis (Tanita)

Full body dual energy X-ray absorptiometry (iDXA) (GE) scan

Bone health

Full body dual energy X-ray absorptiometry (iDXA) (GE) scan

Grip strength

Grip strength using a Jamar J00105 hydraulic hand dynamometer

Retinal and disk imaging

Microscopic features of the optic nerve and macula assessed by using a Topcon TRC-NW6S retinal camera

Cardiovascular system

Blood pressure using the Omron 705 automated device (measured twice, or three times if first and second measurements differed by ≥5 mm Hg)

Electrocardiogram (ECG) using the Atria 6100 automated system

Arterial stiffness as assessed by VICORDER device

3D carotid ultrasound using a Philips ultrasound system and mechano‐transducer probe

Respiratory function

The Pneumotrac Vitalograph spirometry test

Cardiorespiratory fitness

Treadmill sub-maximal fitness test with heart rate monitoring

Biological samples collected

Blood, urine, and saliva