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Table 5 Patient characteristics of the SMS group divided into subgroups responding to SMS questions in > 26 weeks (more than half of SMS messages); 1–26 weeks, 0 weeks

From: Effects of weekly pain monitoring on back pain outcomes: a non-randomised controlled study

Patient characteristics at baseline SMS group
 > 26 responses (n = 995) 1–26 responses (n = 274) 0 responses (n = 354)
Age; mean (SD) 45.6 (13.0) 41.9 (14.8) 43.5 (14.2)
Sex, female; n (%) 420 (42.2%) 103 (37.6%) 132 (37.3%)
Back pain intensity, NRS (0–10); mean (SD) 6.7 (2.0) 6.7 (2.1) 6.6 (2.1)
Episode duration, > 7 day; n (%) 478 (48.6%) 148 (54.4%) 188 (53.6%)
Prognostic index, STarT
Low; n (%) 428 (44.3%) 89 (33.8%) 140 (43.1%)
Medium; n (%) 351 (36.3%) 92 (35.0%) 115 (35.4%)
High; n (%) 188 (19.4%) 82 (31.2%) 70 (21.5%)
Activity limitation, RMDQ (0–100); mean (SD) 55.3 (23.7) 58.0 (23.3) 54.6 (24.3)
Ability to control pain, NRS (0–10); mean (SD) 5.5 (2.3) 5.3 (2.3) 5.4 (2.4)
  1. NRS = Numeric Rating Scale; RMDQ = Roland Morris Disability Questionnaire; STarT = The Keele STarT Back Screening Tool; SD = standard deviation