The Influence of Different Factors on Workers' Disability Due to Low Back Pain

August 27, 2025 updated by: Francisco M. Kovacs, Kovacs Foundation

Study to Identify the Influence of Different Factors on Workers' Disability Due to Low Back Pain

The purpose of this study is to determine, in Spanish workers, the influence of different factors (personal, psychological, work related and clinical) on the risk of being on sick leave during the 18 months after baseline assessment, and on the duration of that sick leave.

Study Overview

Status

Completed

Conditions

Intervention / Treatment

Study Type

Observational

Enrollment (Estimated)

7300

Contacts and Locations

This section provides the contact details for those conducting the study, and information on where this study is being conducted.

Study Locations

  • Spain
    • Balearic Islands
      • Palma de Mallorca, Balearic Islands, Spain, 07012
        • Kovacs Foundation

Participation Criteria

Researchers look for people who fit a certain description, called eligibility criteria. Some examples of these criteria are a person's general health condition or prior treatments.

Eligibility Criteria

Ages Eligible for Study

18 years to 65 years (Adult, Older Adult)

Accepts Healthy Volunteers

Yes

Sampling Method

Non-Probability Sample

Study Population

Workers from companies and workers' health care organizations who are currently active.

Description

Inclusion Criteria:

  • Subjects who get their checkups at participating health services
  • With a labor contract that won't make it likely that they stop work before the next 18 months, for causes other than their health
  • Who sign the informed consent form

Exclusion Criteria:

  • Don't sign the informed consent form
  • Inability to fill our the questionnaires
  • Bedridden
  • Rheumatologic inflammatory disease, cancer or fibromyalgia
  • Suspicion of fibromyalgia
  • Red flags for systemic disease
  • Criteria for surgery
  • Criteria for urgent referral to surgery

Study Plan

This section provides details of the study plan, including how the study is designed and what the study is measuring.

How is the study designed?

Design Details

Cohorts and Interventions

Group / Cohort
Intervention / Treatment
A
Workers from companies and workers' health care organizations who go for their periodic medical checkup.
Behavioral: Set of questionnaires (respondent)
A set of questionnaires to determine risk factors for sick leave due to low back pain.

What is the study measuring?

Primary Outcome Measures

Outcome Measure
Time Frame
The influence of different factors on risk of sick leave for low back pain
Time Frame: 18 months
18 months

Collaborators and Investigators

This is where you will find people and organizations involved with this study.

Sponsor

Kovacs Foundation

Investigators

  • Study Director: Francisco M Kovacs, MD, PhD, Kovacs Foundation, Palma de Mallorca, 07012, Spain
  • Principal Investigator: Mario Gestoso, MD, Kovacs Foundation,Palma de Mallorca, Spain

Publications and helpful links

The person responsible for entering information about the study voluntarily provides these publications. These may be about anything related to the study.

General Publications

Study record dates

These dates track the progress of study record and summary results submissions to ClinicalTrials.gov. Study records and reported results are reviewed by the National Library of Medicine (NLM) to make sure they meet specific quality control standards before being posted on the public website.

Study Major Dates

Study Start

February 1, 2008

Primary Completion (Actual)

June 1, 2021

Study Completion (Actual)

December 1, 2021

Study Registration Dates

First Submitted

April 24, 2008

First Submitted That Met QC Criteria

April 25, 2008

First Posted (Estimated)

April 28, 2008

Study Record Updates

Last Update Posted (Estimated)

September 4, 2025

Last Update Submitted That Met QC Criteria

August 27, 2025

Last Verified

August 1, 2025

More Information

Terms related to this study

Keywords

Additional Relevant MeSH Terms

Other Study ID Numbers

  • FK-I-25

This information was retrieved directly from the website clinicaltrials.gov without any changes. If you have any requests to change, remove or update your study details, please contact register@clinicaltrials.gov. As soon as a change is implemented on clinicaltrials.gov, this will be updated automatically on our website as well.

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