Table 1

Patient characteristics at the initial visit for participants, non-participants, those completing the one year follow up, and drop outs

Participants
(n = 443)
Non-participants
(n = 162)
Completers
(n = 268)
Drop outs
(n = 175)
Age (mean (SD))43.9  (14.6) 41.0  (16.6)45.0  (14.3)42.1  (15)1-150
Men (%) (95% CI)48 (43, 53)58 (50, 66)45 (39, 51)52 (45, 59)
Duration at initial visit (%) (95%CI)
 < 1 week36 (32, 40)37 (30, 44)33 (27, 39)39 (32, 46)
 1–7 weeks42 (37, 47)44 (36, 52)45 (39, 51)39 (32, 46)
 > 7 weeks23 (19, 27)20 (14, 26)23 (18, 28)24 (18, 30)
Median severity of1-151
 Pain (IQR) 25 (15–33)22 (13–33)25 (15–35)24 (14–32)
 Disability (IQR)13 (8–16)12 (7–16)13 (8–16)14 (7–14)
Sciatica (%) (95% CI)47 (42–52)36 (29–43)52 (46–58)40 (33–47)
Straight leg raising limited (%) (95% CI)16 (13, 19)13 (8, 18)18 (13, 23)14 (9, 19)
Sudden onset (%) (95% CI)48 (43, 53)58 (50, 66)48 (42, 54)47 (40, 54)
History of surgery (%) (95% CI)6 (4, 8)3 (0, 6)6 (3, 9)6 (2, 10)
Referred at initial visit (%) (95% CI)56 (51, 61)42 (34, 50)55 (44, 61)57 (50, 64)
  • 1-150 p Value less than 0.05.

  • 1-151 Visual analogue scale for pain, range 0–50, Roland disability scale for disability, range 0–24.