Skip to main content

Table 5 Overall and quarter-specific MCIDs (cut-points) for four low back pain subpopulations.

From: Responsiveness and minimal clinically important difference for pain and disability instruments in low back pain patients

Instrument Overall MCID Quarter-specific MCIDs by baseline entry score§
   0–25 26–50 51–75 76–100
All patients      
   ODI 11† (11) ‡ 8† (8) ‡ 12† (12) ‡ 40† (40)‡  
   RMQ 5 (20) 2 (7) 5 (20) 6 (27) -
   LBPRSdisability 5 (17) 1 (3) 4 (13) 10 (33) -
   SF36 (pf) 3 (17) 1 (5) 3 (17) 7 (33) -
   LBPRSpain 6 (10) 4 (7) 10 (17) 23 (38) 11† (18) ‡
   SF36 (bp) 3 (29) - 2 (22) 3 (33) 5 (50)
   NRSpain 1 (10) 1 (10) 2 (20) 4 (40) 3 (30)
Subpopulations      
Primary sector patients      
   ODI 9 (9) 9 (9) 16 (16) 40 (40) -
   RMQ 5 (20) 2 (7)* 6 (27) 11 (47) -
   LBPRSdisability 5 (17) 0 (0) 6 (20) 10 (33) -
   SF36 (pf) 2 (11) 1 (5)* 2 (10) 9 (45) -
   LBPRSpain 12 (20) 6 (10) 13 (22) 20 (33) -
   SF36 (bp) 4 (42) - 4 (38)* 2 (19) 5 (50)
   NRSpain 4 (40) 1 (10)* 3 (30) 4 (40) -
Secondary sector patients      
   ODI 8 (8) 1 (1)* 8 (8) 18 (18)* -
   RMQ 2 (7) 4 (17) 2 (7) 2 (7) -
   LBPRSdisability 5 (17) 1 (3) 5 (17) 3 (10) -
   SF36 (pf) 6 (30) 1 (5) 2 (10) 3 (33)* -
   LBPRSpain 8 (13) 4 (7) 10 (17) 17 (28) -
   SF36 (bp) 2 (22) - 2 (22)* 3 (33) 3 (30)
   NRSpain 2 (20) 1 (10) 2 (20) 4 (40) 1 (10)
LBP only patients      
   ODI 9 (9) 9 (9) 13 (13)* 40 (40) -
   RMQ 2 (7) 2 (7) 5 (23) 11 (47) -
   LBPRSdisability 5 (17) 1 (3) 6 (20) 13 (43) -
   SF36 (pf) 1 (5) 1 (5) 3 (17) 9 (45) -
   LBPRSpain 7 (12) 7 (12) 13 (22) 25 (42) -
   SF36 (bp) 4 (43) - 1 (10)* 3 (33) 5 (50)
   NRSpain 1 (10) 1 (10) 3 (30)* 4 (40) 5 (50)*
Leg pain (+/- LBP)      
   ODI 8 (8) 3 (3) 8 (8) 18 (18) -
   RMQ 5 (20) 0 (0) 5 (20) 5 (20) -
   LBPRSdisability 5 (17) 2 (7)* 4 (13) 5 (17) -
   SF36 (pf) 4 (20) 1 (6)* 2 (10) 7 (33) -
   LBPRSpain 10 (17) 6 (10) 5 (17) 22 (38) 11 (18)
   SF36 (bp) 3 (30) - 1 (11) 2 (19) 3 (30)
   NRSpain 2 (20) 0 (0) 2 (20) 4 (40) 3 (30)
  1. ODI = Oswestry Disability Index; RMQ = Roland Morris Disability Questionnaire; LBPRSdisability = Disability subscale of the Low Back Pain Rating Scale; SF36 (pf) = Physical function subscale of the SF36; LBPRSpain = Pain subscale of the Low Back Pain Rating Scale; SF36 (bp) = Bodily pain subscale of the SF36; NRSpain = Numeric 11-box pain rating scale; MCID = Minimal Clinically Important Difference of the raw change score.
  2. § Baseline scores are divided into quarters of the original scale range.
  3. † MCID in point changes of the original scales. Scale ranges: ODI 0–100; RMQ 0–23; LBPRSdisability 0–30; SF36 (pf) 0–20; LBPRSpain 0–60; SF36 (bp) 0–10; NRSpain 0–10.
  4. ‡ MCID in point changes of the transformed scales (0–100).
  5. * Poor sensitivity or specificity (< 55)