Table 2 Results of logistic regression model: dependent variable: regular vaccination: 0 = No, 1 = Yes; odds ratios (95% confidence intervals) are displayed

Gender: Female^a

1.030

1.020

1.010

1.026

1.027

1.034

1.033

1.003

(0.896 – 1.183)

(0.888 – 1.172)

(0.879 – 1.161)

(0.893 – 1.177)

(0.895 – 1.179)

(0.901 – 1.187)

(0.899 – 1.188)

(0.873 – 1.152)

Age in years

1.063^***

1.063^***

1.064^***

1.061^***

1.062^***

1.062^***

1.063^***

1.062^***

(1.053 – 1.074)

(1.052 – 1.073)

(1.053 – 1.074)

(1.051 – 1.072)

(1.052 – 1.072)

(1.052 – 1.072)

(1.053 – 1.074)

(1.052 – 1.072)

Marital status: Not married^b

0.797^**

0.803^**

0.805^**

0.794^**

0.800^**

0.799^**

0.801^**

0.812^**

(0.690 – 0.920)

(0.696 – 0.927)

(0.698 – 0.929)

(0.689 – 0.916)

(0.694 – 0.922)

(0.693 – 0.921)

(0.693 – 0.925)

(0.703 – 0.936)

Monthly net equivalence income

1.000

1.000

1.000

1.000

1.000

1.000

1.000

1.000

(1.000 – 1.000)

(1.000 – 1.000)

(1.000 – 1.000)

(1.000 – 1.000)

(1.000 – 1.000)

(1.000 – 1.000)

(1.000 – 1.000)

(1.000 – 1.000)

Region: East

2.776^***

2.756^***

2.783^***

2.770^***

2.780^***

2.783^***

2.724^***

2.812^***

(2.418 – 3.188)

(2.401 – 3.165)

(2.423 – 3.198)

(2.414 – 3.179)

(2.422 – 3.191)

(2.425 – 3.194)

(2.370 – 3.131)

(2.447 – 3.231)

Body-Mass-Index (BMI)

1.021^**

1.020^**

1.021^**

1.021^**

1.020^**

1.020^**

1.020^*

1.019^*

(1.005 – 1.036)

(1.005 – 1.036)

(1.006 – 1.037)

(1.005 – 1.036)

(1.005 – 1.036)

(1.005 – 1.036)

(1.005 – 1.035)

(1.004 – 1.035)

Smoking status: Yes, sometimes^c

1.040

1.040

1.042

1.033

1.038

0.998

1.087

1.026

(0.682 – 1.588)

(0.682 – 1.588)

(0.683 – 1.590)

(0.678 – 1.576)

(0.681 – 1.584)

(0.655 – 1.518)

(0.710 – 1.664)

(0.673 – 1.565)

- Not anymore^c

1.139

1.134

1.132

1.130

1.132

1.141

1.124

1.195

(0.897 – 1.445)

(0.893 – 1.439)

(0.892 – 1.438)

(0.891 – 1.433)

(0.893 – 1.435)

(0.900 – 1.447)

(0.884 – 1.430)

(0.941 – 1.518)

- Never been smoker^c

1.075

1.071

1.069

1.070

1.073

1.081

1.065

1.127

(0.847 – 1.364)

(0.844 – 1.358)

(0.843 – 1.356)

(0.844 – 1.356)

(0.847 – 1.359)

(0.853 – 1.369)

(0.838 – 1.354)

(0.888 – 1.431)

Consumption of alcohol: several times a week^d

1.380^**

1.374^**

1.376^**

1.363^**

1.359^**

1.369^**

1.390^**

1.362^**

(1.119 – 1.701)

(1.114 – 1.694)

(1.116 – 1.698)

(1.106 – 1.681)

(1.103 – 1.675)

(1.110 – 1.687)

(1.125 – 1.716)

(1.103 – 1.681)

- Once a week^d

1.361^*

1.358^*

1.360^*

1.361^*

1.360^*

1.369^**

1.379^**

1.344^*

(1.074 – 1.723)

(1.072 – 1.721)

(1.073 – 1.723)

(1.075 – 1.722)

(1.075 – 1.721)

(1.082 – 1.733)

(1.088 – 1.749)

(1.060 – 1.703)

- One to three times a month4

1.359^*

1.368^*

1.366^*

1.356^*

1.358^*

1.346^*

1.353^*

1.352^*

(1.055 – 1.750)

(1.062 – 1.762)

(1.060 – 1.760)

(1.053 – 1.745)

(1.054 – 1.748)

(1.046 – 1.733)

(1.049 – 1.745)

(1.049 – 1.743)

- Less frequently^d

1.569^***

1.566^***

1.572^***

1.554^***

1.573^***

1.545^***

1.556^***

1.500^***

(1.262 – 1.952)

(1.259 – 1.949)

(1.264 – 1.957)

(1.250 – 1.932)

(1.265 – 1.955)

(1.243 – 1.920)

(1.249 – 1.938)

(1.205 – 1.868)

- Never^d

1.479^**

1.491^**

1.491^**

1.484^**

1.488^**

1.490^**

1.576^***

1.495^**

(1.149 – 1.903)

(1.159 – 1.918)

(1.159 – 1.918)

(1.154 – 1.907)

(1.158 – 1.912)

(1.159 – 1.914)

(1.222 – 2.034)

(1.160 – 1.926)

Number of physical illnesses

1.116^***

1.120^***

1.111^***

1.113^***

1.118^***

1.111^***

1.121^***

1.106^***

(1.076 – 1.157)

(1.081 – 1.161)

(1.071 – 1.153)

(1.074 – 1.154)

(1.078 – 1.159)

(1.072 – 1.152)

(1.081 – 1.162)

(1.067 – 1.147)

Psychological factor

0.948

1.014

1.114

0.895⁺

0.893

0.841^*

1.098

1.160^**

(0.863 – 1.042)

(0.895 – 1.149)

(0.975 – 1.272)

(0.794 – 1.008)

(0.771 – 1.035)

(0.712 – 0.994)

(0.971 – 1.241)

(1.048 – 1.285)

Constant

0.00394^***

0.00320^***

0.00251^***

0.00512^***

0.00501^***

0.00636^***

0.00226^***

0.00254^***

(0.00161 – 0.00966)

(0.00118 – 0.00867)

(0.000986 – 0.00641)

(0.00201 – 0.0131)

(0.00190 – 0.0132)

(0.00227 – 0.0178)

(0.000847 – 0.00602)

(0.00104 – 0.00617)

Observations

4525

4522

4521

4557

4553

4567

4477

4500

Pseudo R²

0.0898

0.0894

0.0898

0.0900

0.0905

0.0899

0.0902

0.0909