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Table 5 Theory of Planned Behavior Predictors (n = 427)

From: A national physician survey on prescribing syringes as an HIV prevention measure

 

MDs willing Rx

(n = 267)

MDs not willing

(n = 160)

unadj OR

95% CI

adj OR*

95% CI

Measures

n

%

n

%

  

(n = 425 for model)

Attitude Scale (3 item)

2.45

2.05–2.94

1.81

1.47–2.22

> = 50

200

75.2%

33

20.6%

   

(chisq = 31.9)

<50

66

24.8%

127

79.4%

    
     

2.24

1.87–2.70

1.53

1.23 – 1.89

Subjective Norms Scale (4 item)

    

= 50

203

76.6%

56

35.0%

   

(chisq = 14.7)

<50

62

23.4%

104

65.0%

    
     

2.93

2.36–3.65

2.00

1.59 – 2.51

Perceived Control Scale (4 item)

    

> = 50

206

77.7%

33

20.6%

   

(chisq = 35.4)

<50

59

22.3%

127

79.4%

    
  1. *odds ratio and 95% CI are for a 10 point increase in the scale
  2. ROC for model = .902