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Table 2 Exposure variables, covariates and outcome variables for the total study group, both overall and stratified by body mass index category and country

From: The relationship between hours of sleep, screen time and frequency of food and drink consumption in Spain in the 2011 and 2013 ALADINO: a cross-sectional study

Variables under study

Total study group

Normal weight

Overweight

Total study group

Normal weight

Overweight

2011

2013

Mean (SD)

Mean (SD)

Mean (SD)

Mean (SD)

Mean (SD)

Mean (SD)

Sleep duration (hours/day)*

9.9

0.7

9.9

0.7

9.8

0.7

9.9

0.7

9.9

0.7

9.8

0.7

Screen time (hours/day)*

1.8

0.9

1.8

0.9

1.9

0.9

2.5

1.4

2.5

1.3

2.7

1.4

 

Boys**

1.9

0.9

1.9

0.9

1.9

0.9

2.7

1.4

2.6

1.4

2.8

1.4

Girls**

1.7

0.8

1.7

0.8

1.8

0.8

2.3

1.3

2.3

1.4

2.4

1.4

Outdoor play time (hours/day)

1.5

0.7

1.5

0.7

1.5

0.7

1.8

0.9

1.8

0.9

1.8

0.9

Have PC, TV, etc. in the room (%)*

30.2

 

26.7

 

34.7

 

35.1

 

32.6

 

38.4

 
 

Boys*

32.1

 

28.5

 

36.2

 

38.0

 

36.2

 

40.1

 

Girls*

28.3

 

25.1

 

32.9

 

32.3

 

29.4

 

36.5

 

Outcome variables - food consumption frequencies (days/week)

Legumes

2.6

1.4

2.5

1.4

2.6

1.5

2.6

1.4

2.6

1.4

2.6

1.4

100% fruit juice

2.9

2.5

2.8

2.5

3.0

2.5

2.4

2.3

2.3

2.3

2.5

2.3

Whole-fat milk*

3.8

3.3

4.1

3.2

3.4

3.3

3.4

3.3

3.8

3.3

2.8

3.2

Milkshakes

1.9

2.2

1.9

2.2

1.9

2.2

1.9

2.1

1.9

2.1

1.8

2.1

Cheese

3.0

2.2

3.0

2.2

3.1

2.2

2.9

2.1

2.9

2.1

2.8

2.1

Yoghourt, or other dairy products

4.7

2.2

4.7

2.2

4.7

2.2

4.6

2.2

4.6

2.2

4.7

2.2

Meat

3.7

1.9

3.7

1.8

3.6

1.9

3.6

1.9

3.7

1.9

3.6

1.8

Fish

2.7

1.5

2.7

1.5

2.6

1.5

2.7

1.5

2.7

1.5

2.7

1.5

Potato chips and other salty snacks

1.8

1.2

1.8

1.2

1.8

1.3

1.8

1.1

1.8

1.1

1.8

1.1

Candy bars or chocolate

2.0

1.5

2.1

1.5

2.0

1.5

2.1

1.4

2.1

1.5

2.0

1.3

Biscuits, cakes, etc.

2.4

1.8

2.5

1.8

2.4

1.7

2.7

2.0

2.9

2.0

2.6

1.9

Pizza, chips, hamburgers

2.0

1.0

2.0

1.0

2.0

1.0

2.0

0.9

2.0

0.9

2.0

0.9

Eggs

2.3

1.3

2.3

1.3

2.3

1.3

2.3

1.1

2.3

1.2

2.3

1.1

Cereals

2.9

2.5

3.0

2.5

2.8

2.4

2.7

2.4

2.8

2.5

2.6

2.4

White bread

4.6

2.6

4.7

2.5

4.5

2.6

4.5

2.5

4.6

2.5

4.4

2.5

Whole-grain bread

0.9

1.8

0.8

1.7

1.0

1.9

0.9

1.8

0.8

1.7

0.9

1.8

Pasta

2.7

1.6

2.8

1.7

2.7

1.6

2.5

1.4

2.6

1.5

2.4

1.2

Fresh fruit

4.8

2.3

4.8

2.3

4.8

2.4

4.9

2.3

5.0

2.3

4.9

2.3

Vegetables (excluding potatoes)

3.5

2.1

3.5

2.1

3.4

2.0

3.7

2.1

3.7

2.1

3.7

2.2

Soft drinks containing sugar

1.3

1.8

1.3

1.8

1.3

1.8

1.0

1.5

1.0

1.6

1.0

1.4

Diet/light soft drinks

0.7

1.7

0.6

1.5

0.8

1.8

0.5

1.3

0.5

1.2

0.6

1.4

  1. * p < 0.05 for mean differences between weight status groups
  2. ** p < 0.05 for mean differences between weight status groups in 2013