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Table 3 Trends over time in public perceptions and behaviors regarding Q fever in the Netherlands (2009, 2010, and 2012)

From: Q fever in the Netherlands: public perceptions and behavioral responses in three different epidemiological regions: a follow-up study

 

Survey 1

Survey 2

Survey 3

Trends over time

August 2009: baseline (n = 1347)

April 2010: first follow-up (n = 1249)

April 2012: second follow-up (n = 1030)a

Survey 1 versus 2

Survey 2 versus 3

 

High score (%)b

Mean

High score (%)b

Mean

High score (%)b

Mean

p-valuec

p-valuec

Knowlegde

       

Summary score – Chronbach’s alpha 0.6

33

2.73

59

3.80

49

3.42

<0.001 (+)

<0.001 (−)

Perceived severity [scale 1–5]

       

 1. “Q fever is a severe disease”

57

3.53

73

3.79

78

3.89

<0.001 (+)

0.04 (+)

 2. “Q fever is very harmful for my health”

53

3.45

63

3.65

67

3.73

<0.001 (+)

ns

 3. Severity of getting Q fever coming year

57

3.67

70

3.94

77

4.08

<0.001 (+)

<0.001 (+)

 Summary score – Chronbach’s alpha 0.7

--

3.55

--

3.79

--

3.90

<0.001 (+)

<0.001 (+)

Perceived vulnerability [scale 1–5]

        

 1. Perceived susceptibility for oneself

11

2.63

14

2.67

14

2.67

ns

ns

 2. Perceived chance of getting infected coming year

2

2.22

3

2.20

1

2.03

ns

<0.001 (−)

Perceived anxiety [scale 1–5]

        

 1. Worried about Q fever

5

2.17

8

2.36

6

2.16

<0.001 (+)

<0.001 (−)

 2. Fear for Q fever

3

2.11

5

2.23

4

2.12

<0.001 (+)

<0.001 (−)

 3. Thinking of Q fever

1

1.74

1

1.98

1

1.66

<0.001 (+)

<0.001 (−)

 Summary score – Chronbach’s alpha 0.8

--

2.01

--

2.19

--

1.98

<0.001 (+)

<0.001 (−)

Perceived efficacy [scale 1–5]

       

 1. Practice better hygiene

60

3.57

50

3.31

51

3.34

<0.001 (−)

ns

 2. Avoid Q fever affected regions

64

3.64

75

3.92

80

4.10

<0.001 (+)

<0.001 (+)

 3. Avoid contact with goats and sheep

81

4.13

85

4.25

84

4.28

<0.001 (+)

ns

 4. Do not use raw dairy products

57

3.57

60

3.65

66

3.84

0.04 (+)

<0.001 (+)

 5. Wear face mask

24

2.65

30

2.85

45

3.29

<0.001 (+)

<0.001 (+)

 6. Move to place without Q fever

17

2.21

31

2.61

42

3.14

<0.001 (+)

<0.001 (+)

 7. Seek medical consultation with onset of symptoms

59

3.57

55

3.46

51

3.42

<0.001 (−)

ns

 8. Take antibiotics

34

3.01

32

2.93

36

3.11

0.047 (−)

<0.001 (+)

 Summary score – Chronbach’s alpha 0.7

--

3.29

--

3.37

--

3.56

<0.001 (+)

<0.001 (+)

Perceived self-efficacyd [scale 1–5]

       

 1. Practice better hygiene

88

4.32

84

4.22

82

4.21

<0.001 (−)

ns

 2. Avoid Q fever affected regions

65

3.72

67

3.77

66

3.77

ns

ns

 3. Avoid contact with goats and sheep

83

4.26

85

4.26

83

4.22

ns

ns

 4. Do not use raw dairy products

71

3.94

71

3.95

70

3.92

ns

ns

 5. Wear face mask

40

3.15

40

3.08

42

3.15

0.04 (−)

ns

 6. Move to place without Q fever

9

1.86

12

1.99

13

2.10

0.001 (+)

0.005 (+)

 7. Seek medical consultation with onset of symptoms

81

4.20

76

4.05

75

4.03

<0.001 (−)

ns

 8. Take antibiotics

73

3.98

67

3.81

71

3.90

<0.001 (−)

ns

 Summary score – Chronbach’s alpha 0.8

--

3.68

--

3.64

--

3.66

0.02 (−)

ns

Intentiond [scale 1–5]

       

 1. Practice better hygiene

86

4.33

81

4.17

80

4.15

<0.001 (−)

ns

 2. Avoid Q fever affected regions

70

3.86

69

3.82

72

3.93

ns

0.01 (+)

 3. Avoid contact with goats and sheep

84

4.29

83

4.24

82

4.22

0.03 (−)

ns

 4. Do not use raw dairy products

70

3.97

70

3.93

71

3.95

ns

ns

 5. Wear face mask

40

3.10

36

3.00

39

3.10

0.003 (−)

0.04 (+)

 6. Move to place without Q fever

8

1.79

11

1.92

11

2.04

<0.001 (+)

0.003 (+)

 7. Seek medical consultation with onset of symptoms

79

4.17

73

3.98

68

3.89

<0.001 (−)

<0.001 (−)

 8. Take antibiotics

68

3.90

63

3.71

61

3.71

<0.001 (−)

ns

 Summary score – Chronbach’s alpha 0.8

--

3.68

--

3.60

--

3.62

<0.001 (−)

ns

  1. ns = not statistically significant; a 932 respondents participated in both follow-up surveys (331 of region 1; 350 of region 2; 251 of region 3); b percentage of respondents who scored 4–5 (except for knowledge: percentage of respondents who answered 4 or more out of 7 items correctly); c time trends based on p-values obtained using paired t-tests; d respondents were asked to imagine that governmental health institutes would recommend the preventive measure; ‘(+)’ indicates a significant increase over time p < 0.05; ‘(−)‘ indicates a significant decrease over time p < 0.05.