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Table 2 Demographic characteristics of the research setting population and the study sample, and expected sample counts

From: Shaping the Social: design of a settings-based intervention study to improve well-being and reduce smoking and dropout in Danish vocational schools

 

Population of the research setting (n = 22511)a

Study sample (n = 5794)b

Expected sample countsd

 

n

%

n

%

n

95 % CI

Sex

      

 Male

18311

81.3

4703

81.2

4713.0

4662.9 − 4763.1

 Female

4200

18.7

1091

18.8

1081.0

1030.9 − 1131.1

Age groups, years

      

 15-18

10575

47.0

2700

46.6

2719.5

2655.3 − 2783.7

 19-24

8262

36.7

2130

36.8

2124.7

2062.7 − 2186.7

 >24

3674

16.3

959

16.6

944.8

897.3 − 992.3

Prior education

      

 Completed only elementary school or less

17520

81.6

4561

80.6

4615.4

4565.7 − 4665.1

 Completed an education above elementary schoolc

3954

18.4

1096

19.3

1041.6

991.9 − 1091.4

Ethnicity

      

 Danish origin

20019

89.8

5105

89.2

5141.5

5102.6 − 5180.4

 Immigrants/descendants

2272

10.2

620

10.8

583.5

544.6 − 622.4

  1. a1-10-2011 to 30-9-2012; Statistics Denmark
  2. bSelf-reported
  3. cVocational school, high school, or higher education
  4. dCalculated by formulas proposed by Sousa et al. (2004) [47]