Table 4

Factors associated with anticipated preventive behaviors protecting oneself if 2 to 3 new human-to-human H5N1 cases were to be reported in Hong Kong

Face mask use in public venues

Increased frequency of handwashing

Avoidance of eating poultry




Row%

ORu

ORm

Row%

ORu

ORm

Row%

ORu

ORm


    Background characteristics

Age groups

18 – 34

65.1

1.00

1.00

81.7

1.00

ns

55.9

1.00

ns

35 – 60

78.9

2.00**

2.38***

89.6

1.93*

68.5

1.71**

Marital status

Never married

64.9

1.00

ns

83.0

1.00

ns

55.3

1.00

1.00

Ever married

79.0

2.04**

88.9

1.64~

68.9

1.79**

2.11***

Employment status

Not employed full-time

65.8

1.00

1.00

86.4

ns

---

61.3

ns

---

Employed full-time

78.9

1.95**

2.07**

86.8

65.5

    Perceived modes of transmission of human-to-human H5N1:

Respiratory droplets

No/not certain

62.5

1.00

ns

77.8

1.00

ns

61.1

ns

---

Yes

75.6

1.86*

88.2

2.13*

64.3

Bodily contact

No/not certain

70.0

1.00

ns

86.2

ns

---

61.2

ns

---

Yes

77.8

1.50*

87.2

66.7

Objects contaminated with the virus

No/not certain

72.1

ns

---

82.7

1.00

ns

62.4

ns

---

Yes

74.8

89.2

1.73*

64.7

Eating well-cooked poultry

No/not certain

73.8

ns

---

86.2

ns

---

60.3

1.00

1.00

Yes

73.6

88.0

74.4

1.91**

1.92**

No. of items with "yes" responses in the above 4 items

0 – 2

68.9

1.00

ns

83.8

1.00

ns

60.6

1.00

ns

3 – 4

81.1

1.94**

91.0

1.97*

68.7

1.42~

    Perceived impacts of human-to-human H5N1

Fatality rate

Same as SARS/better than SARS/not certain

67.1

1.00

1.00

83.1

1.00

1.00

60.8

1.00

ns

Worse than SARS

83.7

2.51***

1.86*

92.1

2.37**

1.94*

68.3

1.39~

Efficacy of treatment

Same as SARS/better than SARS/not certain

71.5

1.00

ns

85.6

1.00

ns

62.8

ns

---

Worse than SARS

89.2

3.31**

93.8

2.56~

70.8

Perceived chance to have a major human-to-human H5N1 outbreak in Hong Kong

Low/very low chance/not certain

68.5

1.00

1.00

85.2

ns

---

59.9

1.00

1.00

High/very high chance

84.3

2.47***

2.23**

89.8

71.7

1.69*

1.58*

Worry about oneself/family members contracting the virusa

Unlikely/very unlikely/not certain

63.9

1.00

1.00

81.5

1.00

1.00

57.5

1.00

ns

Likely/very likely

82.2

2.61***

2.11**

91.1

2.32**

2.20**

69.3

1.67**

No effective drugs currently available

Disagree/not certain

68.7

1.00

ns

83.5

1.00

ns

62.7

ns

---

Agree

78.7

1.69*

89.8

1.73*

65.0

    Perceived susceptibility to H5N1 infection

Oneself or one's family

Unlikely/very unlikely/not certain

69.3

1.00

ns

86.7

ns

---

62.5

ns

---

Likely/very likely

85.9

2.71***

86.7

67.4

Older people

Unlikely/very unlikely/not certain

64.0

ns

---

88.0

ns

---

56.0

ns

---

Likely/very likely

74.8

86.5

64.7

Adults

Unlikely/very unlikely/not certain

68.6

1.00

ns

84.3

ns

---

63.6

ns

---

Likely/very likely

79.3

1.76**

89.3

64.0

Children

Unlikely/very unlikely/not certain

61.6

1.00

ns

82.2

ns

---

67.1

ns

---

Likely/very likely

75.8

1.95*

87.4

63.3

Health care workers

Unlikely/very unlikely/not certain

63.8

1.00

ns

84.8

ns

---

64.8

ns

---

Likely/very likely

76.4

1.83*

87.2

63.6

Food sellers

Unlikely/very unlikely/not certain

68.9

ns

---

81.1

ns

---

45.9

1.00

1.00

Likely/very likely

74.6

87.6

66.9

2.38**

2.63***

Food dealers

Unlikely/very unlikely/not certain

68.6

1.00

ns

86.0

ns

---

60.5

ns

---

Likely/very likely

76.4

1.48~

87.0

65.6

The general public

Unlikely/very unlikely/not certain

68.9

1.00

ns

86.2

ns

---

61.7

ns

---

Likely/very likely

83.4

2.28**

87.6

68.0

No. of items with "likely/very likely" responses in the above 8 items

0 – 6

69.0

1.00

1.00

86.2

ns

---

62.3

ns

---

7 – 8

88.1

3.33***

2.54**

88.1

68.3

    Perceived efficacy of prevention measures

Quarantine of the infected people

Low/very low/not certain

70.4

ns

---

88.9

ns

---

66.7

ns

---

High/very high

73.9

86.6

63.7

Face mask use in public venues

Low/very low/not certain

37.5

1.00

1.00

68.8

1.00

1.00

47.9

1.00

1.00

High/very high

77.6

5.77***

2.78*

88.6

3.52***

2.21*

65.5

2.06*

1.87*

Frequent handwashing

Low/very low/not certain

68.8

ns

---

50.0

1.00

1.00

71.9

ns

---

High/very high

74.1

89.2

8.24***

7.76***

63.3

Home disinfection

Low/very low/not certain

63.3

1.00

ns

75.5

1.00

ns

63.3

ns

---

High/very high

74.9

1.73~

87.9

2.35*

63.9

Mass extermination of poultry

Low/very low/not certain

66.9

1.00

ns

78.9

1.00

1.00

56.3

1.00

ns

High/very high

76.5

1.61*

89.8

2.35**

2.12*

66.8

1.56*

No. of items with "high/very high chance" responses in the above 5 items

0 – 3

46.8

1.00

1.00

69.4

1.00

ns

61.3

ns

---

4 – 5

77.6

3.93***

2.75**

89.1

3.62***

64.2


a Would worry that it is likely/very likely for oneself or one's family members to contract H5N1 (if 2–3 new cases were to be reported in Hong Kong. Gender and education level were not associated with any of the 3 dependent variables and were hence not tabulated.

ORU = Univariate odds ratio.

ORm = Odds ratios obtained from multivariate stepwise logistic regression using univariately significant (including marginally significant) variables as candidate variables.

~ 0.5 < p < 0.1; *p < 0.5; **p < 0.01; ***p < 0.001.

ns = not significant.

--- univariately non-significant and was not considered in the multivariate stepwise logistic regression analysis.

Lau et al. BMC Infectious Diseases 2007 7:18   doi:10.1186/1471-2334-7-18

Open Data