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Table 4 Associations between socio-demographic variables and percentage of energy from processed-food groups; UK National Diet & Nutrition Survey, 2008-12

From: Characterisation of UK diets according to degree of food processing and associations with socio-demographics and obesity: cross-sectional analysis of UK National Diet and Nutrition Survey (2008–12)

  

% energy from unprocessed or minimally processed foods

% energy from processed ingredients

% energy from unprocessed or minimally processed foods AND processed ingredients

% energy from ultra-processed food products

Variable

Level

% energy, mean (95 % CI)1

Adjusted2 coefficient (95% CI)

% energy, mean (95 % CI)

Adjusted coefficient (95 % CI)

% energy, mean (95 % CI)

Adjusted coefficient (95% CI)

% energy, mean (95 % CI)

Adjusted coefficient (95 % CI)

Gender

Male

26.2

(25.4 to 27.1)

Reference

13.2

(12.6 to 13.8)

Reference

39.4

(38.4 to 40.4)

Reference

53.3

(52.3 to 54.4)

Reference

 

Female

29.3

(28.6 to 30.0)

2.28

(1.21 to 3.34)

13.5

(13.0 to 14.1)

−0.36

(−1.15 to 0.44)

42.9

(51.9 to 53.7)

1.92

(0.62 to 3.22)

52.8

(51.9 to 53.7)

−1.38

(−2.67 to −0.09)

Occupational social class

Managerial & prof.

28.4

(27.6 to 29.2)

Reference

12.9

(12.3 to 13.4)

Reference

41.3

(40.3 to 42.3)

Reference

52.0

(51.0 to 53.0)

Reference

Intermediate

28.4

(27.3 to 29.4)

−0.83

(−2.10 to 0.44)

13.5

(12.8 to 14.2)

0.17

(−0.73 to 1.06)

41.9

(40.7 to 43.1)

−0.66

(−2.14 to 0.81)

53.3

(52.1 to 54.5)

0.34

(−1.12 to 1.79)

Routine & manual

26.2

(25.2 to 27.3)

−2.62

(−3.88 to −1.35)

13.8

(12.9 to 14.7)

0.56

(−0.48 to 1.59)

40.0

(38.5 to 41.5)

−2.06

(−3.73 to −0.39)

54.7

(53.2 to 56.1)

1.60

(−0.05 to 3.26)

Age group3

18–29 years

23.5

(21.9 to 25.0)

0.16

(0.13 to 0.19)

13.2

(12.1 to 14.3)

0.02

(−0.01 to 0.04)

36.2

(34.3 to 38.0)

0.18

(0.15 to 0.22)

58.2

(56.3 to 60.2)

−0.18

(−0.21 to −0.14)

30–39 years

25.7

(24.6 to 26.8)

 

13.2

(12.4 to 14.0)

 

38.9

(37.5 to 40.2)

 

55.9

(54.5 to 57.3)

 
 

40–49 years

27.1

(25.9 to 28.2)

 

13.4

(12.5 to 14.3)

 

40.4

(39.0 to 41.9)

 

52.2

(50.7 to 53.6)

 
 

50–59 years

29.7

(28.4 to 30.9)

 

13.4

(12.2 to 14.5)

 

43.0

(41.3 to 44.8)

 

49.7

(48.1 to 51.3)

 
 

60–69 years

32.5

(31.3 to 33.7)

 

12.7

(11.8 to 13.6)

 

45.2

(43.8 to 46.5)

 

49.0

(47.5 to 50.5)

 
 

70+ years

31.4

(30.1 to 32.7)

 

14.6

(13.7 to 15.5)

 

46.0

(44.5 to 47.5)

 

50.6

(49.0 to 52.2)

 

All

 

27.8

(27.3 to 28.4)

NA

13.4

(13.0 to 13.8)

NA

41.2

(40.5 to 41.9)

 

53.1

(52.4 to 53.7)

NA

  1. 1 CI Confidence interval; 2linear regression coefficient simultaneously adjusted for gender, occupational social class, age and percentage of energy from alcohol; 3descriptive statistics are shown by age group, age was entered into linear regression models as a continuous variable