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Table 1 Basic characteristics of Belgian Health Interview Survey (BHIS) and Belgian Compulsory Health Insurance (BCHI) samples, 2008

From: Regional differences in the validity of self-reported use of health care in Belgium: selection versus reporting bias

 

BHIS

BCHI

 

Weighted % a

n

%

n

Gender

    

 Men

48.12

4,417

48.69

109,497

 Women

51.88

5,234

51.31

115,406

Age group

    

 15–24 years

14.27

1,209

14.41

32,407

 25–34 years

15.30

1,340

15.31

34,427

 35–44 years

17.92

1,503

17.11

38,482

 45–54 years

17.88

1,403

17.20

38,677

 55–64 years

14.09

1,337

14.37

32,324

 65–75 years

10.32

879

10.41

23,408

 75+ years

10.22

1,980

11.20

25,178

Region b

    

 Flanders

58.20

3,411

58,81

129,902

 Brussels

10.48

2,831

9,25

20,441

 Wallonia

31.32

3,409

31,93

70,523

Total

100.00

9,651

100.00

224,903

  1. a Percentages are adjusted to the composition of the Belgian population in terms of age group, gender, province and household size through the use of post stratification weights
  2. b In the BCHI data, information on Region is absent for 4,037 people (1.79 % of sample)
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BMC Medical Research Methodology

ISSN: 1471-2288

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