|
Continuous outcomes
|
Control group (N = 1,225)
|
SMS group (N = 1,623)
|
SMS group responding in > 26 weeks (N = 995)
|
|---|
|
LBP at 12 months follow-up, NRS (0–10); mean (SD)
|
2.6 (2.4) (n = 799)
|
2.1 (2.4) (n = 1,012)
|
2.0 (2.4) (n = 826)
|
|
Activity limitation, RMDQ (0–100); mean (SD)
|
19.5 (22.8) (n = 610)
|
20.1 (22.9) (n = 847)
|
19.9 (22.6) (n = 720)
|
|
Ability to control pain, NRS (0–10); mean (SD)
|
7.9 (2.4) (n = 790)
|
7.9 (2.6) (n = 999)
|
7.9 (2.6) (n = 813)
|
|
Binary outcomes
|
Control group (N = 1,225)
|
SMS group (N = 1,623)
|
SMS group responding in > 26 weeks (N = 995)
|
|---|
|
Pain > 3, yes; n (%)
|
239 (29.9%) (n = 799)
|
236 (23.3%) (n = 1,012)
|
182 (22.0%) (n = 826)
|
|
Non-improvement of activity limitation; n (%)
|
137 (22.8%) (n = 601)
|
184 (22.0%) (n = 835)
|
152 (21.3%) (n = 714)
|
|
Lack of pain control, yes; n (%)
|
85 (10.8%) (n = 790)
|
105 (10.5%) (n = 999)
|
90 (11.1%) (n = 81)
|
- LBP = low back pain; NRS = Numeric Rating Scale; RMDQ = Roland Morris Disability Questionnaire; SD = standard deviation
