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Table 2 Baseline physical (self-reported) and MRI characteristics of participants

From: Characteristics of patients with low back and leg pain seeking treatment in primary care: baseline results from the ATLAS cohort study

Physical Characteristics (Denominatora) n = 609
Pain and function  
 RMDQ disability score (0–23) (609), mean (SD) 12.7 (5.7)
 Back pain intensity (609), mean (SD) 5.6 (2.2)
 Leg pain intensity (608), mean (SD) 5.2 (2.4)
 Pain below knee (584) 394 (67.5)
 Leg pain worse than back pain (609) 280 (46.0)
 Sleep disturbance due to back/leg painb(609) 428 (70.3)
First ever episode of back/leg pain (609) 58 (9.5)
Duration of symptoms  
 Back pain current episode (607)  
  Less than 6 weeks 218 (35.9)
  6–12 weeks 126 (20.8)
   >3 months 263 (43.3)
 Leg pain current episode (583)  
  Less than 6 weeks 251 (43.1)
  6–12 weeks 120 (20.6)
   >3 months 212 (36.4)
Start Back prognostic risk score (589)  
  Low Risk 82 (13.9)
  Medium Risk 276 (46.9)
  High Risk 231 (39.2)
Sciatica Bothersomeness Index (SBI),
mean (SD)
 
 Leg pain (583) 4.3 (1.5)
 Numbness or tingling in leg, foot or groin (583) 3.2 (2.1)
 Weakness in leg or foot (582) 2.6 (2.1)
 Back or leg pain while sitting 4.1 (1.6)
Composite score (582) 14.2 (5.4)
 S-LANSS; neuropathic pain score (>12) (607) 293 (48.1)
Imaging(553)  
 Positive MRI findings for nerve root compression 297 (53.7)
  1. All figures are frequencies (percentages) unless stated otherwise as mean (SD)
  2. aDenominator varies for some participants due to missing data or not applicable case
  3. bInformation on back and/or leg pain associated sleep disturbance was collected as part of the clinical assessment (yes/no category)