Table 1 Descriptive analysis of baseline variables across Start Back Tool (SBT) categories

Mean age (SD)

45.4 (15.1)

45.9 (15.0)

45.8 (14.1)

Female

54.8%

52.7%

50.5%

Seen practitioner before

47.0%

59.7%

33.6%

Leg Pain

   Above the knee^*

25.5%

23.3%

35.5%

   Below the knee

6.0%

10.9%

12.1%

>30 days pain in year

41.1%

41.1%

38.3%

Recurring

69.6%

65.9%

59.8%

Duration

   < 1 month

54.8%

53.5%

61.7%

   1–3 months

14.3%

14.0%

7.5%

   >3 months

31.0%

32.6%

30.8%

Median Pain (25, 75) ^**

5 (4–7)

7 (6–8)

7 (6–9)

Median BQ (25, 75) ^**

24 (14–33)

36 (30–44)

45 (34–54)