BMI missing
0 = BMI data not available
1 = BMI data available

1 = Male
2 = Female
3 = Other

1 = White
2 = Black
3 = Hispanic
4 = Asian
5 = Mixed
6 = Other
7 = Indian/S Asian
8 = Native American

Geographical Region
1 = UK
2 = Europe
3 = North America
4 = South America
5 = Australia/NZ
6 = Asia
7 = Africa
8 = Middle East

Age range (identify eligible participants)
0 = < 18
1 = 18-69
2 = 70+

1 = Some HS/Secondary/O levels/GCSEs
2 = High School/Secondary/A levels
3 = Vocational
4 = Undergraduate/College degree
5 = Graduate degree/Master's/PG Diploma/Certificate
6 = Doctorate/Professional qualification
7 = Other

1 = Higher Managerial/Administrative/Professional
2 = Intermediate Managerial/Administrative/Professional
3 = Supervisory, Clerical, Junior Managerial/Administrative/Professionals
4 = Skilled manual
5 = Semi-skilled/Unskilled manual
6 = Student
7 = Unemployed
8 = Other