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Table 4 Demographic comparison of boost and core samples with the London population

From: The effect of survey method on survey participation: Analysis of data from the Health Survey for England 2006 and the Boost Survey for London

 

MEN

  

WOMEN

  
 

Core

%

Boost

%

Population

%

Core

%

Boost

%

Population

%

Sex

47

44

49

53

55

51

Age (grouped)

      

16-24

12

12

15

12

13

14

25-34

23

20

25

22

21

24

35-44

22

21

22

24

22

20

45-54

15

18

15

15

16

15

55-64

13

13

11

11

12

11

65+

15

15

13

16

16

16

Ethnicity

      

White

64

69

72

63

70

72

Mixed

2

2

2

3

3

2

Asian

19

16

13

17

14

12

Black

13

9

9

14

10

10

Chinese/other

3

4

3

4

4

4

Base (unweighted) a

736

2202

3667744

833

2726

3745524

Base (weighted) b

768

2302

 

870

2871

 
  1. a Bases vary but are of similar sizes; those show are for age group.
  2. b Only selection weights were applied in this analysis.
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BMC Medical Research Methodology

ISSN: 1471-2288

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