Table 4 Odds for currently being under medical treatment

Older age (15 years of as referent)

1.13

0.074

1.06

0.431

0.91-1.24

Female gender

1.26

0.068

0.97

0.871

0.70-1.34

Participation in sports (compared to not participating in sports)

0.66

0.320

0.77

0.529

0.34-1.73

BMI (compared to 0-25% quartile, 16.18; 19.71)

 2. quartile (19.71; 21.55)

1.64

0.015

1.75

<0.001

1.30-2.35

 3. quartile (>21.55; 23.62)

1.81

0.010

1.56

0.016

1.08-2.25

 4. quartile (>23.62; 34)

1.50

0.188

1.16

0.666

0.57-2.35

EQ-5D index score (compared to 0–25 quartile, -0.169; 0.723)

 25-50% quartile (>0.723; 0.776)

0.69

0.051

0.94

0.801

0.60- 1.48

 50-75 quartile (>0.776; 0.824)

0.40

<0.001

0.76

0.201

0.51-1.15

 75-100% quartile (>0.824; 1.000)

0.77

0.338

1.47

0.067

0.97-2.21

Pain severity (compared to daily pain)

 More than once per week

0.48

<0.001

0.59

<0.001

0.45-0.75

 Weekly

0.40

<0.001

0.53

<0.001

0.38-0.76

 Monthly

0.17

<0.001

0.25

0.002

0.11-0.59

Pain duration (per 10 month increase)

1.05

0.131

1.01

0.737

0.95-1.08

Traumatic onset of pain (compared to an insidious onset)

2.27

0.032

2.24

0.034

1.06-4.72

Contact to GP

5.04

<0.001

3.64

0.002

1.64- 8.08