Table 4 Odds ratios of traumatic and non-traumatic lower limb pain by sex, age, psychosomatic symptoms, hypermobility, frequency of exercise and physical fitness estimated by logistic regression analysis.

Traumatic

Non-traumatic

Traumatic

Non-traumatic

Sex (reference males)

0.62 (0.42–0.94)

0.98 (0.73–1.32)

Age (years)

   9–10

Reference

Reference

Reference

Reference

   11–13

0.75 (0.55–0.98)

0.69 (0.51–0.94)

0.64 (0.41–0.96)

0.67 (0.44–0.91)

^°Psychosomatic symptoms

   Headache

1.56 (1.01–2.40)

2.14 (1.55–2.94)

1.88 (1.32–2.75)

   Abdominal pain

2.40 (1.53–3.77)

2.28 (1.63–3.20)

   Depressive feelings

1.98 (1.26–3.12)

2.42 (1.75–3.37)

1.74 (1.19–2.76)

   Difficulty falling asleep

2.18 (1.43–3.33)

1.50 (1.09–2.08)

   Day tiredness

2.83 (1.83–4.38)

2.76 (2.01–3.79)

2.81 (1.72–4.55)

1.98 (1.29–2.87)

   Waking up during nights

2.14 (1.36–3.36)

1.73 (1.22–2.45)

Beighton score for hypermobility

   Less 6

Reference

Reference

   6–9

0.96 (0.43–2.15)

1.05 (0.59–1.85)

Regional knee hypermobility*

0.59 (0.35–0.99)

1.03 (0.73–1.44)

Frequency of exercise

   0–2 times a week

Reference

Reference

Reference

   3–4 times a week

1.17 (0.72–1.88)

1.33 (0.95–1.86)

0.92 (0.64–1.66)

   5–7 times a week

2.62 (1.56–4.38)

1.48 (0.96–2.28)

2.04 (1.08–3.77)

   VO₂ max

   Average

Reference

Reference

Reference

   Low

1.42 (0.88–1.91)

1.05 (0.70–1.58)

1.47 (0.89–2.24)

   High

2.85 (1.50–5.42)

0.96 (0.60–1.52)

12.97 (1.67–5.78)