Table 1. The main characteristics of study participants
Variable n %
Total 8086100
Sex
Male359644.5
Female449055.5
Age groups, years
16–247028.7
25–34103712.8
35–44137917.1
45–54140617.4
55–64134116.6
65–74123615.3
≥7598512.2
Ethnic group
White692885.7
Black2403.0
Asian6978.6
Other2212.7
Quintile Index of Multiple Deprivation
1 (least deprived)167120.7
2155619.2
3157519.5
4160719.9
5 (most deprived)167720.7
Quintile equivalised household income
Highest121515.0
Second143917.8
Third133416.5
Fourth132516.4
Lowest119614.8
Unknown157719.5
Highest educational qualification
Degree or equivalent232928.8
Below degree407550.4
None163820.3
Unknown440.5
Rurality
Urban655581.1
Rural153118.9
Lasting illnesses (>12 months)
No438254.2
Yes369845.7
Unknown60.1
Smoking status
Never475058.7
Former206625.6
Current122115.1
Unknown490.6
Weekly alcohol consumption
Non-drinker154019.0
Lower risk455056.3
Increasing risk147318.2
Higher risk3334.1
Unknown1902.3
Body mass index
Normal245530.4
Overweight272333.7
Obesity223027.6
Underweight961.2
Unknown5827.2
Times consulted a GP in the last 12 months
0184622.8
1 or 2300437.2
3–5188723.3
6–107979.9
>105526.8