Evidence map›Paper›PMID 16606646›Full record

Trial reportAnnals of the rheumatic diseases2006

Efficacy of sulfasalazine in patients with inflammatory back pain due to undifferentiated spondyloarthritis and early ankylosing spondylitis: a multicentre randomised controlled trial.

J Braun, J Zochling, X Baraliakos, R Alten, G Burmester, K Grasedyck, J Brandt, H Haibel, M Hammer, A Krause and 9 more

Open access · greenAbstract readMulticenter StudyRandomized Controlled Trial
In one paragraph

Trial report in Annals of the rheumatic diseases, 2006. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 68 papers, 7 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
68citing papers in PubMed, 7 pooled it
6.8field-weighted citation impact, top 3% of its field
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

68 citing papers in PubMed, 7 syntheses or guidelines pooled it, 171 citations in OpenAlex.

  1. La Tunisie medicale · 2025
    Guideline
  2. Guideline
  3. Pooled it
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  5. Sulfasalazine for ankylosing spondylitis.The Cochrane database of systematic reviews · 2014
    Pooled it
  6. Guideline
  7. Pooled it
  8. Trial
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  11. Trial
  12. Article
  13. Review
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8 more citing papers are in PubMed but not listed here.

4 · The record

Corrections and comments

5 · Who and what money

Authors and funding

19 authors at 12 institutions in 4 countries.

J BraunRheumazentrum-Ruhrgebiet, Landgrafenstrasse 15, 44652 Herne, Germany. J.Braun@rheumazentrum-ruhrgebiet.de
J Zochling
X Baraliakos
R Alten
G Burmester
K Grasedyck
J Brandt
H Haibel
M Hammer
A Krause
F Mielke
H-P Tony
W Ebner
B Gömör
J Hermann
H Zeidler
E Beck
M Baumgaertner
J Sieper
Charité - Universitätsmedizin Berlin · DERheumazentrum Ruhrgebiet · DEAnfomed Society for Applied Research in Medicine · DEImmanuel Krankenhaus · DEKlinik Hietzing · ATMedical University of Graz · ATPfizer (Germany) · DEPraxis für Humangenetik · DESchlosspark-Klinik · DEUniversity Medical Center Hamburg-Eppendorf · DEUniversity of Würzburg · DEVoestalpine (Brazil) · BR

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

objectivesTo assess the effect of sulfasalazine (SSZ) on inflammatory back pain (IBP) due to active undifferentiated spondyloarthritis (uSpA) or ankylosing spondylitis in patients with symptom duration <5 years.

methodsPatients with IBP and a Bath Ankylosing Spondylitis Disease Activity Index (BASDAI) >3 from 12 centres were randomly assigned to 24 weeks' treatment with SSZ 2 g/day or placebo. The primary outcome variable was the change in BASDAI over 6 months. Secondary outcomes included measures of spinal pain, physical function and inflammation.

results230 patients (50% men, age range 18-64 years, 67% human leucocyte antigen B27 positive) were treated with either SSZ 2x1 g/day or placebo for 6 months. Enthesitis was found in 50%, and peripheral arthritis in 47% of the patients. The mean (SD) BASDAI dropped markedly in both groups: by 3.7 (2.7) and 3.8 (2.4), respectively, as did most secondary outcome measures. No noticeable difference in treatment was observed between groups. Patients with IBP and no peripheral arthritis had significantly (p = 0.03) more benefit with SSZ (BASDAI 5.1 (1.3) to 2.8 (2.3)) than with placebo (5.2 (1.6) to 3.8 (2.4)). Spinal pain (p = 0.03) and morning stiffness (p = 0.05) improved with SSZ in these patients, but other secondary outcomes were not markedly different.

conclusionSSZ was no better than placebo for the treatment of the signs and symptoms of uSpA; however, SSZ was more effective than placebo in the subgroup of patients with IBP and no peripheral arthritis.

Indexed as

AdolescentAdultAntirheumatic AgentsBack PainFemaleHumansMaleMiddle AgedSeverity of Illness IndexSpondylarthritisSpondylitis, AnkylosingSulfasalazineTreatment OutcomeAntirheumatic AgentsSulfasalazine

Identifiers

PMID16606646
PMCPMC1798286
OpenAlexW2170050330

What OpenQuestion holds

Textmetadata
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 OpenQuestion graph.