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Table 2 Demographics obtained by questionnaires and Numeric Pain Rating Scale (NPRS)

From: Inter-examiner reproducibility of tests for lumbar motor control

Variable People with LBP on day of examination (n = 25 (62.5% of total)) People without LBP on day of examination (n = 15 (37.5% of total))
Age in years (mean (SD) 47 (12) 45 (19)
Gender (n (Male/Female) 11/14 3/12
(% (Male/Female)) (44/56) (20/80)
Previous episodes ever (n (% of group))   
   None 2 (8) 9 (60)
   One 1 (4) 1 (7)
   Less than 5 4 (16) 2 (13)
   5 or more 18 (72) 2 (13)
   More than 10   1 (7)
Pain on day of examination * (n (% of group))   
   No pain   15 (100)
   1-3 13 (52)  
   >3 12 (48)  
Back history in months (n (% of group))   
   0-3 2 (8) 12 (80)
   4-7 2 (8) 2 (13)
   8-12 13 (52) 1 (7)
   13-16 8 (32)  
  1. LBP = Low Back Pain.
  2. * Numeric Pain Rating Scale (NPRS range 0-10)