Beskrivelse af JEM

Name: Neck

Exposure: JEM based on  technical measurements including:

  • Angular velocity
  • Flexion
  • Extension

Coverage: 29 differendt job titles based on DISCO-88 (eg, dentists, hairdressers, childcare, carpenters).

Job title and industry classification system: DISCO-88.  

Measures of exposure: Whole day inclinometric measurements were performed using triaxial accelerometers. The inclinometers were placed on the forehead and upper back. Neck movements and positions were characterised by the absolute median angular velocity (°/s) and 1st and 90th percentile of flexion/extension.

The neck’s contribution to the movements and positions was calculated by subtraction of upper back measurements from head measurements. Duration of measurements (excluding breaks) ranged from 3.1 to 6.9 hours.

For each job title, the mean of the median angular velocity and 1st and 90th percentile of flexion/extension was used as the final value in the JEM.

Demographic dimensions: Measurements were carried out en Denmark and Sweden.

Uncertainty in exposure measures: Possibility for misclassification. Though the residual confounding effect is expected to be small due to resultats from sensitivity analyses.

 Access: To obtain access to data follow the application procedure on this site. You will find an overview of the access posibilies to the JEM  here  Hent dokument.

Referencer og kontaktinformation

Contact information: Esben Meulengracht Flachs, Dept. of Occupational and Environmental Medicine, Copenhagen University Hospital, Bispebjerg, Bispebjerg Bakke 23, 2200 Copenhagen NV, Denmark. Mail: esben.meulengracht.flachs@regionh.dk

References: Petersen, J. A., Brauer, C., Thygesen, L. C., Flachs, E. M., Lund, C. B., & Thomsen, J. F. (2022). Prospective, population-based study of occupational movements and postures of the neck as risk factors for cervical disc herniation. BMJ Open, 12(2). https://doi.org/10.1136/BMJOPEN-2021-053999

Forskningsprojekter om fysisk belastning i DOC*X

Inden for DOC*X er der flere projekter, som forsker i sammenhængen mellem fysisk belastning og sundhed, hvoriblandt jobeksponeringsmatricen  JEM’en for nakke benyttes som eksponering.

Der foretages blandt andet registerforskning, som undersøger sammenhængen mellem cervikal diskusprolaps og stigende kumuleret vinkelhastighed, fleksion eller ekstension af nakken.

Dette er blot et eksemple på den forskning, som foretages i DOC*X regi. Her kan du se mere information om andre forskningsprojekter, som benytter DOC*X data.