Table 4 Association between the predictor variables and self-reported non-recovery at 12 months after the injury. All predictor variables were measured at baseline. Odds ratios and 95% confidence intervals (CIs)

23/54

42.6

1.0 (Reference)

33/74

44.6

1.1 (0.5–2.2)

1.2 (0.5–3.0)

6/13

46.2

1.0 (Reference)

49/110

44.5

0.9 (0.3–3.0)

0.7 (0.2–2.7)

1/5

20.0

0.3 (0.02–3.4)

0.1 (0.0–1.4)

7/35

20.0

1.0 (Reference)

13/37

35.1

2.2 (0.7–6.3)

2.8 (0.9–8.8)

36/56

64.3

7.2 (2.7–19.4)

10.4 (3.0–36.6)

35/93

37.6

1.0 (Reference)

16/22

72.7

4.4 (1.6–12.4)

3.5 (1.1–11.6)

8/19

42.1

1.0 (Reference)

43/98

43.9

1.1(0.4–2.9)

0.8 (0.2–2.5)

5/11

45.5

1.2 (2.3–5.1)

0.9 (0.2–5.6)

39/91

42.9

1.0 (Reference)

15/32

46.9

1.2 (0.5–2-6)

0.4 (0.1–1.2)