Evidence map›Paper›PMID 33293310›Full record

ArticleBMJ open2020

Is hard physical work in the early working life associated with back pain later in life? A cross-sectional study among 5700 older workers.

Rúni Bláfoss, Sebastian Venge Skovlund, Rubén López-Bueno, Joaquin Calatayud, Emil Sundstrup, Lars L Andersen

Registry-linked trialOpen access · goldAbstract read
In one paragraph

Article in BMJ open, 2020. The graph could read no effect estimate from its abstract, so it casts no vote on the map. It is linked to trial NCT03634410 (SeniorWorkingLife), which is not on this map. Cited by 6 papers.

0numbers the graph read from it
0cells of the map it votes in
6citing papers in PubMed
0.6field-weighted citation impact, top 30% 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.

NCT03634410 unknown statusnot on this map

SeniorWorkingLife (Danish Title: SeniorArbejdsLiv)

TypeobservationalSponsorNational Research Centre for the Working Environment, DenmarkRan2018 to 2025Enrolled30,000ConditionsWork Related Upper Limb Disorder, Musculoskeletal Pain, Work Accident, Work Injury
3 · Its place in the literature

Who cites it

6 citing papers in PubMed, 8 citations in OpenAlex.

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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

6 authors at 4 institutions in 2 countries.

Rúni BláfossMusculoskeletal Disorders and Physical Workload, National Research Centre for the Working Environment, Copenhagen, Denmark rub@nfa.dk.ORCID 0000-0003-1843-6884
Sebastian Venge SkovlundMusculoskeletal Disorders and Physical Workload, National Research Centre for the Working Environment, Copenhagen, Denmark.
Rubén López-BuenoMusculoskeletal Disorders and Physical Workload, National Research Centre for the Working Environment, Copenhagen, Denmark.ORCID 0000-0002-7865-3429
Joaquin CalatayudMusculoskeletal Disorders and Physical Workload, National Research Centre for the Working Environment, Copenhagen, Denmark.
Emil SundstrupMusculoskeletal Disorders and Physical Workload, National Research Centre for the Working Environment, Copenhagen, Denmark.
Lars L AndersenMusculoskeletal Disorders and Physical Workload, National Research Centre for the Working Environment, Copenhagen, Denmark.
National Research Centre for the Working Environment · DKUniversidad de Zaragoza · ESUniversitat de València · ESUniversity of Southern Denmark · DK

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

objectivesPhysically demanding work increases the risk of developing musculoskeletal disorders during working life, with low back pain (LBP) as the most prevalent and debilitating musculoskeletal disorder worldwide. However, a lack of knowledge exists about the role of early working years on musculoskeletal health later in life. This study investigated whether an exposure-response association exists between physical demands in early working life and risk of LBP in later working life.

designCross-sectional study. SETTING, PARTICIPANTS AND OUTCOME MEASURE: In the SeniorWorkingLife study, 5909 wage earners aged ≥50 years with currently sedentary work replied to a questionnaire survey in 2018 about physical work demands during their first working years (exposure) and current LBP (outcome). Associations between physical work demands in the early working years and current LBP were modelled using general linear models controlling for various confounders, combined with model-assisted weights based on national registers.

resultsHard physical work during early working life was associated with more intense LBP later in life among senior workers with currently sedentary jobs. In the fully adjusted model, workers with 'standing/walking work with lifting/carrying' and 'heavy or fast work that is physically strenuous' during the first years of working life reported higher LBP intensity than those with sedentary work during their first working years (0.2 (95% CI, 0.0 to 0.4) and 0.6 (95% CI, 0.4 to 0.9), respectively).

conclusionWork involving lifting/carrying or work that is physically strenuous in early life is associated with higher intensity of LBP among older workers with currently sedentary employment. These findings suggest that early working life may have an impact on later working years and underscore the necessity for careful introduction and instruction to the working environment for retaining musculoskeletal health and prolonging working life. TRIAL REGISTRATION NUMBER: NCT03634410.

Indexed as

Occupational DiseasesCross-Sectional StudiesFemaleHumansLow Back PainMaleMiddle AgedMusculoskeletal DiseasesRisk FactorsStanding PositionWalkingback painmusculoskeletal disordersoccupational & industrial medicinepublic health

Identifiers

PMID33293310
PMCPMC7722822
OpenAlexW3112639573

What OpenQuestion holds

Textmetadata
LicenceCC BY-NC
Read underepoch 390

Registered trials

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.