Table 2 Univariable logistic regression analysis of visiting a GP. OR = odds ratio, CI = confidence interval, BMI = body mass index

Socio-demographic factors

 Age (years)

  18–25

1

1

1

  26–37

1.50

0.95–2.37

0.081

1.75

0.83–3.68

0.134

1.39

0.77–2.52

0.269

 Sex

  Male

1

1

1

  Female

1.14

0.83–1.55

0.402

1.03

0.66–1.60

0.900

1.24

0.80–1.92

0.336

 Years of study

  Preclinical

1

1

1

  Clinical

1.15

0.85–1.57

0.357

1.01

0.66–1.53

0.954

1.34

0.83–2.16

0.224

 Relationship status

  Not in a relationship

1

1

1

  In a relationship

1.17

0.86–1.61

0.301

1.02

0.67–1.55

0.915

1.42

0.85–2.37

0.180

 Economic status

  Low income

1

1

1

  High income

0.91

0.66–1.25

0.561

0.79

0.52–1.20

0.280

1.13

0.69–1.86

0.611

Health behaviours

 Smoking

  No

1

1

1

  Yes

0.99

0.69–1.43

0.987

0.97

0.58–1.61

0.906

1.03

0.62–1.72

0.906

 Alcohol consumption

  No

1

1

1

  Yes

1.48

1.07–2.06

0.018

1.15

0.70–1.90

0.575

1.81

1.16–2.85

0.010

 Sexual intercourse

  No

1

1

1

  Yes

1.50

1.11–2.04

0.008

1.06

0.69–1.61

0.799

2.21

1.41–3.45

0.001

General health status

 Chronic illness

  No

1

1

1

  Yes

3.79

2.31–6.21

< 0.001

3.85

2.02–7.34

< 0.001

3.70

1.72–7.96

0.001

 BMI

  ≤ 24.9 kg/m²

1

1

1

  ≥ 25.0 kg/m²

0.69

0.47–0.99

0.045

0.56

0.31–1.03

0.061

0.75

0.46–1.21

0.248

 Self-rated general health

  Good

1

1

1

  Poor

1.18

0.86–1.64

0.293

1.13

0.73–1.77

0.564

1.24

0.77–1.98

0.363