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Table 1 Socio-demographic characteristics of the pre-tax (2017) and post-tax samples (2018) in low-income neighbourhoods of Barcelona (intervention) and Madrid (control)

From: Impact of an excise tax on the consumption of sugar-sweetened beverages in young people living in poorer neighbourhoods of Catalonia, Spain: a difference in differences study

N

Pre-tax

p-value a

Post-tax

p-value a

Barcelona

Madrid

Barcelona

Madrid

536

450

488

455

Age, years

 Mean (SD)

27.9 (7.8)

26.7 (7.9)

0.015

29.8 (7.2)

30.5 (7.2)

0.109

Women, %

52.2

47.2

0.121

41.0

58.5

< 0.001

Nationality, %

  

0.535

  

< 0.001

 Spanish

77.2

78.8

 

81.6

52.1

 

 Other

22.8

21.2

 

18.4

47.9

 

Educational level, %

(n = 278)

(n = 449)

0.086

(n = 488)

(n = 454)

< 0.001

 Less than primary

5.4

10.9

 

3.1

6.6

 

 Primary

38.5

37.2

 

19.1

45.8

 

 Secondary

38.9

36.1

 

45.3

37.4

 

 University

17.3

15.8

 

32.6

10.1

 

Occupational status, %

(n = 531)

(n = 449)

0.009

(n = 486)

 

< 0.001

 Gainfully employed

39.9

50.6

 

68.1

59.3

 

 Unemployed

16.4

14.7

 

10.3

20.2

 

 Housework

5.8

4.9

 

3.1

5.9

 

 Student

37.8

29.8

 

18.5

14.5

 
  1. a Student’s t test for age and Pearson’s Chi2 test for the remaining variables