Evidence map›Paper›PMID 23846502›Full record

Trial reportSpine2013

Who should undergo surgery for degenerative spondylolisthesis? Treatment effect predictors in SPORT.

Adam M Pearson, Jon D Lurie, Tor D Tosteson, Wenyan Zhao, William A Abdu, James N Weinstein

Erratum issuedAbstract readObservational StudyRandomized Controlled Trial
In one paragraph

Trial report in Spine, 2013. The graph could read no effect estimate from its abstract, so it casts no vote on the map. An erratum has been issued. Cited by 28 papers, 5 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
28citing papers in PubMed, 5 pooled it
–field-weighted citation impact
1 · What the graph read from it

What it found

Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.

2 · The registry

The trial behind it

Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.

Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.

3 · Its place in the literature

Who cites it

28 citing papers in PubMed, 5 syntheses or guidelines pooled it.

  1. Pooled it
  2. Surgery or physical activity in the management of sciatica: a systematic review and meta-analysis.European spine journal : official publication of the European Spine Society, the European Spinal Deformity Society, and the European Section of the Cervical Spine Research Society · 2016
    Pooled it
  3. Surgery for adult spondylolisthesis: a systematic review of the evidence.European spine journal : official publication of the European Spine Society, the European Spinal Deformity Society, and the European Section of the Cervical Spine Research Society · 2016
    Pooled it
  4. Management of lumbar spinal stenosis.BMJ (Clinical research ed.) · 2016
    Pooled it
  5. Pooled it
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  18. Variation in surgical treatment of degenerative spondylolisthesis in Canada: surgeon assessment of stability and impact on treatment.European spine journal : official publication of the European Spine Society, the European Spinal Deformity Society, and the European Section of the Cervical Spine Research Society · 2021
    Article
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4 · The record

Corrections and comments

  • Erratum issued
5 · Who and what money

Authors and funding

6 authors.

Adam M Pearson*Geisel School of Medicine at Dartmouth, Hanover, NH †Dartmouth-Hitchcock Medical Center, Lebanon, NH; and ‡The Dartmouth Institute for Health Policy and Clinical Practice, Lebanon, NH.
Jon D Lurie
Tor D Tosteson
Wenyan Zhao
William A Abdu
James N Weinstein

Funding

Translational Engineering in Cancer (TEC)P30CA023108 · NCI · DARTMOUTH COLLEGE · PI Fred W Kolling IV · 1985 to 2026
$91.3M
LOW BACK PAIN--A MULTICENTER RANDOMIZED TRIALU01AR045444 · NIAMS · DARTMOUTH COLLEGE · PI WEINSTEIN, JAMES N · 1999 to 2013
$20.8M
Outcomes Calculators for Informed Decision Making in Back SurgeryP60AR062799 · NIAMS · DARTMOUTH COLLEGE · PI TOSTESON, TOR D · 2012 to 2016
$6.1M
NCI NIH HHS P30 CA023108NIAMS NIH HHS P60 AR062799NIAMS NIH HHS U01 AR045444
6 · The paper itself

Abstract

STUDY

designCombined prospective randomized controlled trial and observational cohort study of degenerative spondylolisthesis (DS) with an as-treated analysis.

objectiveTo determine modifiers of the treatment effect (TE) of surgery (the difference between surgical and nonoperative outcomes) for DS using subgroup analysis. SUMMARY OF BACKGROUND DATA: Spine Patient Outcomes Research Trial demonstrated a positive surgical TE for DS at the group level. However, individual characteristics may affect TE.

methodsPatients with DS were treated with either surgery (n = 395) or nonoperative care (n = 210) and were analyzed according to treatment received. Fifty-five baseline variables were used to define subgroups for calculating the time-weighted average TE for the Oswestry Disability Index during 4 years (TE = [INCREMENT] Oswestry Disability Index(surgery)- [INCREMENT] Oswestry Disability Index(nonoperative)). Variables with significant subgroup-by-treatment interactions (P< 0.05) were simultaneously entered into a multivariate model to select independent TE predictors.

resultsAll analyzed subgroups that included at least 50 patients improved significantly more with surgery than with nonoperative treatment (P< 0.05). Multivariate analyses demonstrated that age 67 years or less (TE -15.7 vs.-11.8 for age >67, P= 0.014); female sex (TE -15.6 vs.-11.2 for males, P= 0.01); the absence of stomach problems (TE -15.2 vs.-11.3 for those with stomach problems, P= 0.035); neurogenic claudication (TE -15.3 vs.-9.0 for those without claudication, P= 0.004); reflex asymmetry (TE -17.3 vs.-13.0 for those without asymmetry, P= 0.016); opioid use (TE -18.4 vs.-11.7 for those not using opioids, P< 0.001); not taking antidepressants (TE -14.5 vs.-5.4 for those on antidepressants, P= 0.014); dissatisfaction with symptoms (TE -14.5 vs.-8.3 for those satisfied or neutral, P= 0.039); and anticipating a high likelihood of improvement with surgery (TE -14.8 vs.-5.1 for anticipating a low likelihood of improvement with surgery, P= 0.019) were independently associated with greater TE.

conclusionPatients who met strict inclusion criteria improved more with surgery than with nonoperative treatment, regardless of other specific characteristics. However, TE varied significantly across certain subgroups. LEVEL OF EVIDENCE: 3.

Indexed as

AdultAgedDisability EvaluationFemaleHumansMaleMiddle AgedMultivariate AnalysisOutcome Assessment, Health CarePrognosisProspective StudiesSpondylolisthesisSurveys and Questionnaires

Identifiers

PMID23846502
PMCPMC3808504

What Socratic holds

Textmetadata
LicenceTDM
Read underepoch 390

Registered trials

None linked

Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the Socratic graph.