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Table 3 Stated willingness to participate in health studies by demographic characteristics

From: A telephone survey of factors affecting willingness to participate in health research surveys

 

General population row %

Case-control study participants row %

Cohort study participants row %

 

Number

Very unwilling/Unwilling

Neutral

Very willing/Willing

p valuea

Number

Very unwilling/Unwilling

Neutral

Very willing/ Willing

p valuea

Number

Very unwilling/Unwilling

Neutral

Very willing/Willing

p valuea

Whole group

1546

11

28

61

 

153

1

5

93

 

401

13

69

319

 

Male

653

12

30

58

0.047

93

2

2

96

0.182

375

3

65

297

0.469

Female

893

10

27

61

 

60

0

10

90

 

26

0

4

22

 

Age <40 years

428

12

36

52

<0.001

0

0

0

0

0.992

3

0

67

33

0.056

     40–60 years

637

11

29

60

 

20

0

0

100

 

156

3

21

76

 

     >60 years

475

10

20

70

 

132

2

6

92

 

241

3

14

83

 

ATSIb: Yes

22

18

18

64

0.967

3

0

0

100

0.643

3

0

67

33

0.059

     No

1512

11

28

61

 

148

1

5

93

 

393

3

17

80

 

Country of birth

 Australia

1181

11

27

61

0.495

107

1

7

93

0.511

285

3

18

79

0.483

 Other

359

11

31

59

 

45

2

2

96

 

116

3

15

82

 

Highest level education

 School

650

13

26

61

0.218

74

2.7

7

91

0.356

183

2

16

82

0.400

 Technical/trade certificate

341

9

35

57

 

46

0

2

98

 

126

6

17

77

 

 Tertiary

535

10

27

64

 

31

0

6

94

 

89

2

19

79

 

 Other

10

10

20

70

 

0

0

0

0

 

0

0

0

0

 

Remoteness index

 Metropolitan

870

11

30

59

0.291

94

1

6

93

0.373

272

4

17

79

0.680

 Inner regional

345

12

24

64

 

43

2

5

93

 

98

3

18

79

 

 Outer regional/Remote

331

11

28

62

 

16

0

0

100

 

31

0

16

84

 

SEIFA Relative Disadvantagec

 Quintile 1 most disadvantaged

217

15

29

57

0.287

3

0

0

100

0.928

39

5

23

72

0.618

 Quintile 2

312

9

29

62

 

20

0

5

95

 

73

1

8

90

 

 Quintile 3

340

11

28

61

 

42

2

5

93

 

72

0

22

78

 

 Quintile 4

293

10

31

59

 

33

3

6

91

 

97

6

19

75

 

 Quintile 5 least disadvantaged

384

12

25

64

 

55

0

5

95

 

120

3

17

80

 

Previously done health survey Yes

384

6

21

73

<0.001

153

1

5

94

-

401

3

17

80

-

         No

1107

13

30

57

 

0

0

0

0

 

0

0

0

0

 

Previously refused health survey  Yes

166

19

33

48

<0.001

11

0

9

91

0.585

38

5

18

76

0.501

        No refusal

1329

10

27

63

 

135

0

5

95

 

355

3

17

81

 

Long-term disease/disability Yes

481

9

23

68

0.002

65

2

2

97

0.131

115

4

16

80

0.967

      No

1150

12

30

59

 

85

1

8

91

 

278

3

18

80

 

Spontaneously raised privacy/health issue during interview Yes

19

26

21

53

0.245

2

0

0

100

0.708

5

20

40

40

0.021

       No

1527

11

29

61

 

151

1

5

93

 

396

3

17

80

 
  1. aA chi squared test for trend was used for comparing the numbers for all variables except age, Remoteness index and SEIFA for which ordinal logistic regression was used
  2. bATSI is the acronym for Aboriginal and Torres Strait Islander
  3. cSEIFA Socio-Economic Indexes for Areas is an aggregate score of relative socio-economic disadvantage; the lower the score the higher the relative disadvantage