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Table 3 Multivariate logistic (1, 2, 4) and linear (3) regression analyses indicating associations between several variables and the different outcomes

From: Knowledge, attitudes, and preventive practices about colorectal cancer among adults in an area of Southern Italy

Variable

OR

95% CI

p

Model 1. Knowledge of the two main modifiable risk factors of colorectal cancer (low physical activity, high caloric intake from fat)

Log likelihood = -265.58, χ2 = 38.51 (5 df), p < 0.0001

   

   Educational level

   

Higher

1.08

1.03–1.15

0.004

   Performing physical activity

   

No

1.0*

  

Yes

1.79

1.14–2.83

0.012

   Physical activity modified for fear of contracting colorectal cancer

   

No

1.0*

  

Yes

2.22

1.1–4.49

0.027

   Personal perceived risk of contracting colorectal cancer

   

Lower

0.91

0.83–0.99

0.028

   Dietary habits modified for fear of contracting colorectal cancer

   

No

1.0*

  

Yes

1.92

1.07–3.46

0.029

Model 2. Knowledge of fecal occult blood testing as main test for colorectal cancer prevention

Log likelihood = -379.53, χ2 = 65.05 (8 df), p < 0.0001

   

   Advice received by physician of performing fecal occult blood testing

   

No

1.0*

  

Yes

3.43

2.01–5.83

<0.001

   Educational level

   

Higher

1.08

1.03–1.13

0.001

   Marital status

   

Single/separated/divorced/widowed

1.0*

  

Married

0.47

0.23–0.95

0.035

   Knowledge of risk factors of colorectal cancer

   

No

1.0*

  

Yes

1.87

1.04–3.38

0.037

   Participation in preventive activities about colorectal cancer

   

No

1.0*

  

Yes

3.19

0.83–12.27

0.09

   Physician as source of information about colorectal cancer

   

No

1.0*

  

Yes

1.43

0.88–2.33

0.15

   Belief that colorectal cancer can be prevented

   

No

1.0*

  

Yes

1.22

0.86–1.74

0.26

   Personal or familial history of precancerous lesions or colorectal cancer

   

No

1.0*

  

Yes

1.36

0.8–2.31

0.26

Model 4. Appropriate behavior in undergoing fecal occult blood testing if eligible or not undergoing fecal occult blood testing if not eligible

Log likelihood = -238.38, χ2 = 219.35 (6 df), p < 0.0001

   

   Age

   

Younger

0.85

0.81–0.9

<0.001

   Personal history of precancerous lesions and familial history of precancerous lesions or colorectal cancer

   

No

1.0*

  

Yes

0.29

0.15–0.54

<0.001

   Recommendation by a physician for undergone or not undergone fecal occult blood testing

   

No

1.0*

  

Yes

4.62

2.82–7.58

<0.001

   Educational level

   

Higher

1.07

1.01–1.13

0.034

   Gender

   

Male

1.0*

  

Female

1.62

1.01–2.62

0.049

   Number of other persons in the household

   

Higher

1.14

0.87–1.49

0.34

Variable

Coeff.

t

p

Model 3. Positive attitude towards the utility of screening tests for colorectal cancer prevention

F(6,588) = 12.95, p < 0.0001, R2 = 11.7%, adjusted R2 = 10.8%

   Personal perceived risk of contracting colorectal cancer

0.11

3.65

<0.001

   Belief that colorectal cancer can be prevented

1.13

6.87

<0.001

   Educational level

-0.05

-2.73

0.007

   Physician as source of information about colorectal cancer

0.49

2.27

0.024

   Perception of personal health status

0.05

1.03

0.3

   Gender

-0.16

-0.92

0.36

   Constant

7.68

  
  1. *Reference category
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BMC Cancer

ISSN: 1471-2407

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