Table 1 Characteristics of Participants (n = 347)

Female (%)

172 (50)

ODI baseline (median)(IQR)

20 (10–32)

Male (%)

175 (50)

ODI 1.5 months (median)(IQR)

8 (2–20)

Age in years (mean)(SD)

43 (15)

ODI 3 months median)(IQR)

6 (0–14)

Back pain duration at baseline (n) (%)

ODI 6 months (median)(IQR)

4 (0–14)

0–2 weeks

25 (7)

ODI 12 months (median)(IQR)

4 (0–10)

3–12 weeks

47 (14)

NPRS baseline (mean)(SD)

5.3 (2.3)

3–6 months

21 (6)

Outcome STarT Back Screening Tool (n) (%)

7–12 months

30 (9)

Low risk

166 (48)

1–4 years

91 (26)

Medium risk

143 (41)

5–9 years

60 (17)

High risk

34 (10)

10–20 years

43 (12)

Type of leg pain (n) (%)

> 20 years

29 (8)

Non-radiating low back pain

137 (40)

Non-radicular referred leg pain

186 (54)

Radicular radiating leg pain

22 (6)