Evidence map›Paper›PMID 27809829›Full record

ArticleBMC musculoskeletal disorders2016

Low back pain patterns over one year among 842 workers in the DPhacto study and predictors for chronicity based on repetitive measurements.

Julie Lagersted-Olsen, Hans Bay, Marie Birk Jørgensen, Andreas Holtermann, Karen Søgaard

Abstract read
In one paragraph

Article in BMC musculoskeletal disorders, 2016. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 8 papers.

0numbers the graph read from it
0cells of the map it votes in
8citing 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

8 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

5 authors.

Julie Lagersted-OlsenThe National Research Centre for the Working Environment (NRCWE), Lersø Parkalle 105, 2100, Copenhagen Ø, Denmark.
Hans BayThe National Research Centre for the Working Environment (NRCWE), Lersø Parkalle 105, 2100, Copenhagen Ø, Denmark.
Marie Birk JørgensenThe National Research Centre for the Working Environment (NRCWE), Lersø Parkalle 105, 2100, Copenhagen Ø, Denmark.
Andreas HoltermannThe National Research Centre for the Working Environment (NRCWE), Lersø Parkalle 105, 2100, Copenhagen Ø, Denmark.
Karen SøgaardUniversity of Southern Denmark, Campusvej 55, 5230, Odense M, Denmark. ksogaard@health.sdu.dk.ORCID 0000-0003-3968-6364

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

backgroundLow back pain (LBP) occurrence and intensity are considered to fluctuate over time, requiring frequent repetitive assessments to capture its true time pattern. Text messages makes frequent reporting of LBP feasible, which enables investigation of 1) the time pattern of LBP, and 2) predictors for having a continued high (chronic) level of LBP over longer periods of time. However, this has not previously been investigated in a larger working population. The aim of this study was to examine these two aspects in a working population of 842 workers with repetitive measurements of LBP over one year.

methodsThere were 842 workers from 15 companies in the DPhacto study participating in this study. Demographic, work- and health-related factors, and back endurance were measured at baseline, while 14 monthly repeated text message assessments of LBP intensity were prospectively collected. A factor analysis was used to cluster different time-patterns of LBP, and defining the group of participants with chronic LBP. A multi-adjusted logistic regression analysis was performed to investigate baseline predictors for chronic LBP.

resultsThe factor analysis revealed two dimensions of the time pattern of LBP, defined as the LBP intensity and LBP variation, respectively. A Visual Pain Mapping was formed based on the combination of the two pain dimensions, classifying the time-patterns of LBP into four categories: (1) low intensity and low variation, (2) low intensity and high variation, (3) high intensity and high variation, (4) high intensity and low variation (defined as chronic LBP). Significant baseline predictors for chronic LBP in the fully adjusted model were high baseline LBP (p < 0.01), low workability (p < 0.01), low BMI (p < 0.05), and being a blue-collar worker (vs. white-collar worker) (p < 0.05).

conclusionThis study presents a novel classification of the course of LBP based on repetitive measurements over a year, and revealed the predicting factors for chronic LBP based on repetitive measurements in a working population.

Indexed as

AdultChronic PainDenmarkFactor Analysis, StatisticalFemaleFollow-Up StudiesHumansLow Back PainMaleMiddle AgedOccupational DiseasesPain MeasurementProspective StudiesRisk FactorsSurveys and QuestionnairesText MessagingFactor analysisLow back painRepeated measuresRisk factorsText messagesVisual pain mapping

Identifiers

PMID27809829
PMCPMC5094010

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LicenceCC BY
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Registered trials

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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.