Evidence map›Paper›PMID 27927661›Full record

ArticleBMJ open2016

Differences among primary care patients with different mechanical patterns of low back pain: a cross-sectional investigation.

Lauren S Della Mora, Anthony V Perruccio, Elizabeth M Badley, Y Raja Rampersaud

Abstract readComparative Study
In one paragraph

Article in BMJ open, 2016. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 5 papers.

0numbers the graph read from it
0cells of the map it votes in
5citing papers in PubMed
–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

5 citing papers in PubMed.

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4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

4 authors.

Lauren S Della MoraDalla Lana School of Public Health, University of Toronto, Toronto, Ontario, Canada.
Anthony V PerruccioDalla Lana School of Public Health, University of Toronto, Toronto, Ontario, Canada.
Elizabeth M BadleyDalla Lana School of Public Health, University of Toronto, Toronto, Ontario, Canada.
Y Raja RampersaudArthritis Program, University Health Network, Toronto, Ontario, Canada.

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

objectivesTo characterise and compare a persistent low back pain (LBP) population based on 4 clinical pain patterns.

designCross-sectional analysis of patient-reported data.

settingPatients from 220 primary care practitioners in 3 cities in Ontario, Canada.

participants1020 individuals seeking LBP care. INCLUSION CRITERIA: LBP symptoms lasting 1½-12 months, or unmanageable recurrent symptoms; ages 18+years. EXCLUSION CRITERIA: pregnant/1-year postpartum; involved in active litigation or motor vehicle injury; emergent spinal presentations; pain disorder diagnosis; work injury claim; or constant symptoms persisting >12 months postonset.

main outcome measureHall pain pattern subgroups: back dominant pain aggravated by flexion (P1) or extension (P2), or leg dominant constant (P3) or intermittent (P4) pain (multinomial logistic outcome; referent: P1).

resultsGroups P1 and P2 had the highest proportion of women. P2 and P4 had higher mean ages and comorbidity counts. P3 and P4 had higher proportions of overweight/obese individuals and lower general health scores. Adjusted models: being male and overweight/obese was associated with increased odds of being in P3 (OR 1.64 (95% CI 1.10 to 2.46), and OR 1.74 (1.13 to 2.68), respectively) and P4 (OR 1.87 (1.11 to 3.15) and OR 1.91 (1.06 to 3.42), respectively), and increasing age with increased odds of being in P2 (OR 1.02 (1.01 to 1.03)) and P4 (OR 1.06 (1.04 to 1.08)). Increasing comorbidity count was associated with increased odds of being in P2 (OR 1.14 (1.0 to 1.3)), and better general health scores with decreased odds of being in P3 (OR 0.40 (0.18 to 0.93)).

conclusionsThis is the first study to examine the 'Hall system' in a non-rehab primary care population. Subgroups classified according to this system appear to have distinct profiles. Further research is needed to better characterise and determine the prognostic implication of these clinically derived subgroups.

Indexed as

Primary Health CareAdultAgedAged, 80 and overComorbidityCross-Sectional StudiesFemaleHealth Care SurveysHumansLow Back PainMaleMiddle AgedOntarioOverweightPain MeasurementPatient Acceptance of Health CareEPIDEMIOLOGYlow back painpain patternPRIMARY CARE

Identifiers

PMID27927661
PMCPMC5168682

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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.