Table 3 Data domains within data dictionary

Demographic

Participant age, gender and information relating to household size and income.

Diet

Variables collecting information on salt intake, and meat/vegetable consumption.

Clinical/Anthropometry

WHO STEPS [30] blood pressure protocol, and basic anthropometric measurements.

Personal Medical History

Participant’s history of CVD and diabetes.

Knowledge of HTN

Participant’s knowledge and awareness of hypertension.

Physical activity

Details concerning patient’s level of regular physical exercise.

Smoking

Level of tobacco use

Alcohol

Level of alcohol consumption.

Biochemical

24 h Urine and blood glucose measurement from WHO STEPS biochemical core [30].