Table 3 Stepwise logistic regression model for factors associated with participation in CRC-screening (n = 6008) overall and stratified between males and females

 Female

1.46

1.26–1.70

 50–60

1

Ref

1

Ref

 61–70

1.37

1.17–1.61

1.43

1.15–1.79

 71–80

1.53

1.26–1.86

1.87

1.42–2.45

 Basic school

1

Ref

1

Ref

1

Ref

 High school

0.98

0.81–1.19

1.09

0.84–1.42

0.86

0.65–1.15

 Vocational education

1.41

0.96–2.07

2.06

1.22–3.48

0.86

0.49–1.53

 Medium education

0.76

0.61–0.95

0.93

0.66–1.29

0.64

0.47–0.87

 High education

0.56

0.42–0.72

0.70

0.48–1.02

0.43

0.29–0.64

 < 20,000

1

Ref

1

Ref

 20,000 – 33,333

1.13

0.86–1.48

1.34

0.91–1.97

 33,334 – 46,666

1.47

1.11–1.93

1.80

1.22–2.65

 46,667 – 66,666

1.68

1.26–2.24

2.28

1.52–3.42

 > 66,666

1.87

1.33–2.64

2.10

1.32–3.38

 < 25

1

Ref

1

Ref

 25–30 (overweight)

1.07

0.91–1.26

1.04

0.82–1.32

 > 30 (obese)

0.80

0.66–0.97

0.75

0.57–0.98

 Low

1

Ref

1

Ref

 Moderate

0.84

0.71–1.01

0.80

0.63–1.02

 High

0.76

0.60–0.96

0.73

0.54–0.99

 Never smoked

1

Ref

1

Ref

1

Ref

 Quit smoking

0.91

0.77–1.07

0.99

0.79–1.24

0.82

0.65–1.04

 Smoker

0.57

0.47–0.68

0.65

0.50–0.84

0.49

0.37–0.63

 None

1

Ref

1

Ref

1

Ref

 1 to 14 units per week

1.40

1.19–1.66

1.51

1.17–1.94

1.43

1.15–1.78

 > 14 times per week

1.04

0.82–1.32

1.12

0.82–1.52

0.97

0.63–1.48

 Healthy and very healthy

0.81

0.66–0.98

Variables not included in model