Table 4 Results of logistic regression

 Email

N = 202

0.24

(0.14–0.41)

0.32

(0.21–0.60)

N = 201

0.27

(0.16–0.45)

 Hybrid

N = 204

0.34

(0.22–0.54)

0.77

(0.49–1.21)

N = 151

0.45

(0.28–0.71)

 Mail (reference)

N = 196

–

–

N = 250

–

Sex (female reference)

1.16

(0.82–1.64)

1.08

(0.77–1.52)

1.11

(0.79–1.56)

  < 50 yrs.

1.20

(0.47–3.08)

0.79

(0.32–1.96)

0.81

(0.32–2.03)

 50–59 yrs.

1.54

(0.77–3.07)

1.16

(0.60–2.23)

1.13

(0.58–2.18)

 60–69 yrs.

2.16

(1.13–4.01)

1.49

(0.81–2.72)

1.48

(0.80–2.74)

 70–79 yrs.

1.43

(0.76–2.69)

1.69

(0.94–3.06)

1.49

(0.81–2.71)

  > 79 yrs. (reference)

–

–

–

 Low

0.45

(0.29–0.69)

0.47

(0.31–0.72)

0.48

(0.31–0.73)

 Middle

0.87

(0.57–1.33)

0.75

(0.48–1.14)

0.76

(0.50–1.17)

 High (reference)

–

–

–

  < 5 yrs.

0.45

(0.18–1.12)

0.68

(0.28–1.72)

0.77

(0.31–1.87)

  ≥ 5 yrs. (reference)

–

–

–

 time last visit x delivery method

0.55

(0.36–0.84)

0.67

(0.43–1.03)

0.72

(0.48–1.08)

Model χ²

< 0.001

< 0.001

< 0.001

0.43

0.51

0.18