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Table 3 Study population by sex and age

From: A clinical trial alert tool to recruit large patient samples and assess selection bias in general practice research

 

Net sample

Not contacted

Contacted

 

%

"open" %

exclusions %

refusals %

enrolees %

Gender*

(n = 16,067)

(n = 10,906)

(n = 3 248)

(n = 387)

(n = 1,526)

Women

72.0

70.5

73.2

69.0

81.3

Men

28.0

29.5

26.8

31.0

18.7

Women**

(n = 11,574)

(n = 7,690)

(n = 2,377)

(n = 267)

(n = 1,240)

60 - 69

29.2

31.7

16.4

32.6

37.6

70 - 79

32.4

32.8

25.7

37.1

41.9

80+

38.4

35.6

57.9

30.3

20.6

Men***

(n = 4,493)

(n = 3,216)

(n = 871)

(n = 120)

(n = 286)

70 - 79

56.4

41.5

44.2

56.7

70.6

80+

43.6

58.5

55.8

43.3

29.4

  1. * Chi2 = 80.9; df = 3; p < .0001
  2. ** Chi2 = 607.8; df = 6; p < .0001
  3. *** Chi2 = 97.9; df = 3; p < .0001