PMID- 23506164
OWN - NLM
STAT- MEDLINE
DCOM- 20130617
LR  - 20220331
IS  - 1745-3682 (Electronic)
IS  - 1745-3674 (Print)
IS  - 1745-3674 (Linking)
VI  - 84
IP  - 2
DP  - 2013 Apr
TI  - Can we define success criteria for lumbar disc surgery? : estimates for a 
      substantial amount of improvement in core outcome measures.
PG  - 196-201
LID - 10.3109/17453674.2013.786634 [doi]
AB  - BACKGROUND AND PURPOSE: A successful outcome after lumbar discectomy indicates a 
      substantial improvement. To use the cutoffs for minimal clinically important 
      difference (MCID) as success criteria has a large potential bias, simply because 
      it is difficult to classify patients who report that they are "moderately 
      improved". We propose that the criteria for success should be defined by those 
      who report that they are "completely recovered" or "much better". METHODS: A 
      cohort of 692 patients were operated for lumbar disc herniation and followed for 
      one year in the Norwegian Registry for Spine Surgery. The global perceived scale 
      of change was used as an external criterion, and success was defined as those who 
      reported that they were "completely recovered" or "much better". Criteria for 
      success for each of (1) the Oswestry disability index (ODI; score range 0-100 
      where 0 = no disability), (2) the numerical pain scale (NRS; range 0-10 where 0 = 
      no pain) for back and leg pain, and (3) the Euroqol (EQ-5D; -0.6 to 1 where 1 = 
      perfect health) were estimated by defining the optimal cutoff point on receiver 
      operating characteristic curves. RESULTS: The cutoff values for success for the 
      mean change scores were 20 (ODI), 2.5 (NRS back), 3.5 (NRS leg), and 0.30 
      (EQ-5D). According to the cutoff estimates, the proportions of successful 
      outcomes were 66% for the ODI and 67% for the NRS leg pain scale. INTERPRETATION: 
      The sensitivity/specificity values for the ODI and leg pain were acceptable, 
      whereas they were very low for the EQ-5D. The cutoffs for success can be used as 
      benchmarks when comparing data from different surgical units.
FAU - Solberg, Tore
AU  - Solberg T
AD  - Department of Neurosurgery , University Hospital of Northern Norway (UNN), 
      Norway. tore.solberg@unn.no
FAU - Johnsen, Lars Gunnar
AU  - Johnsen LG
FAU - Nygaard, Oystein P
AU  - Nygaard OP
FAU - Grotle, Margreth
AU  - Grotle M
LA  - eng
PT  - Journal Article
DEP - 20130319
PL  - Sweden
TA  - Acta Orthop
JT  - Acta orthopaedica
JID - 101231512
SB  - IM
MH  - Disability Evaluation
MH  - Diskectomy/*standards
MH  - Female
MH  - Follow-Up Studies
MH  - Humans
MH  - Intervertebral Disc Displacement/*surgery
MH  - Laminectomy/*standards
MH  - Lumbar Vertebrae/*surgery
MH  - Male
MH  - Middle Aged
MH  - Outcome Assessment, Health Care/*methods
MH  - Pain Measurement
MH  - Patient Satisfaction
MH  - Quality of Life
MH  - ROC Curve
MH  - Recovery of Function
MH  - Surveys and Questionnaires/*standards
MH  - Treatment Outcome
PMC - PMC3639342
EDAT- 2013/03/20 06:00
MHDA- 2013/06/19 06:00
PMCR- 2013/04/01
CRDT- 2013/03/20 06:00
PHST- 2013/03/20 06:00 [entrez]
PHST- 2013/03/20 06:00 [pubmed]
PHST- 2013/06/19 06:00 [medline]
PHST- 2013/04/01 00:00 [pmc-release]
AID - ORT_A_786634_O [pii]
AID - 10.3109/17453674.2013.786634 [doi]
PST - ppublish
SO  - Acta Orthop. 2013 Apr;84(2):196-201. doi: 10.3109/17453674.2013.786634. Epub 2013 
      Mar 19.