NCT00667316|CompletedDMC
The Influence of Different Factors on Workers' Disability Due to Low Back Pain
Study to Identify the Influence of Different Factors on Workers' Disability Due to Low Back Pain
Loading search results
Study to Identify the Influence of Different Factors on Workers' Disability Due to Low Back Pain
Sponsor study identifier
observational
7,300
1 country
1
Study Start
February 2008
Date type not reportedThis date has not been verified as actual or estimated.
Primary Completion
June 2021
Actual (reported)Study Completion
December 2021
Actual (reported)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.
Registry-reported information. Elapsed time and enrollment totals alone do not measure study progress or recruitment pace.
December 2021
Actual (reported)Click on a node to explore related trials.
Some registry-reported names shown below are not yet linked in this graph.
Dates and qualifiers reported by the registry. Estimated dates do not confirm that a milestone has occurred.
February 2008
Date type not reportedThis date has not been verified as actual or estimated.
April 24, 2008
Actual (reported)April 28, 2008
Actual (reported)June 2021
Actual (reported)December 2021
Actual (reported)The influence of different factors on risk of sick leave for low back pain
18 months
Workers from companies and workers' health care organizations who go for their periodic medical checkup.
A set of questionnaires to determine risk factors for sick leave due to low back pain.
Registry-reported names are shown in full. Names without a link have not yet been matched to a Syfrah profile.
Workers from companies and workers' health care organizations who are currently active.
Kovacs Foundation
Palma de Mallorca, Balearic Islands, 07012, Spain
Guo HR, Tanaka S, Cameron LL, Seligman PJ, Behrens VJ, Ger J, Wild DK, Putz-Anderson V. Back pain among workers in the United States: national estimates and workers at high risk. Am J Ind Med. 1995 Nov;28(5):591-602. doi: 10.1002/ajim.4700280504.
Turner JA, Franklin G, Fulton-Kehoe D, Sheppard L, Wickizer TM, Wu R, Gluck JV, Egan K. Worker recovery expectations and fear-avoidance predict work disability in a population-based workers' compensation back pain sample. Spine (Phila Pa 1976). 2006 Mar 15;31(6):682-9. doi: 10.1097/01.brs.0000202762.88787.af.
Francisco M Kovacs, MD, PhD
Kovacs Foundation, Palma de Mallorca, 07012, Spain
Mario Gestoso, MD
Kovacs Foundation,Palma de Mallorca, Spain
First Submitted
April 24, 2008
First Posted
April 28, 2008
Study Start
February 2008
Date type not reportedThis date has not been verified as actual or estimated.
Primary Completion
June 2021
A Trial on the Effect on Low Back Pain Related Disability of Different Health Education Programs for Retired Persons
Contact the study team to confirm eligibility.
Kovacs FM, Muriel A, Castillo Sanchez MD, Medina JM, Royuela A; Spanish Back Pain Research Network. Fear avoidance beliefs influence duration of sick leave in Spanish low back pain patients. Spine (Phila Pa 1976). 2007 Jul 15;32(16):1761-6. doi: 10.1097/BRS.0b013e3180b9f5f7.
Seco-Calvo J, Royuela A, Rodriguez-Perez V, Kovacs F. Predicting low back pain-related absenteeism in the Spanish general working population. Occup Environ Med. 2026 Jan 21;82(11):547-555. doi: 10.1136/oemed-2025-110435.
Study Completion
December 2021
Actual (reported)Last Updated
September 4, 2025
Record last verified: 2025-08
Download the complete ClinicalTrials.gov record imported by Syfrah, including fields not shown in this page. The registry may contain a newer revision.
Source: ClinicalTrials.gov.
JSON downloads include source attribution and retrieval details alongside the unchanged original record or the separately normalized values.
Source retrieved: