Date of filling in this questionnaire or last update: 09/09/2021
1. JOB-EXPOSURE MATRICES
JEM name
  NORJEM - Mechanical exposures
Institute
  STAMI (National Institute of Occupational Health, Oslo, Norway)
Country
  Norway
Contact person
  Ingrid Sivesind Mehlum
Email
  ism@stami.no
References (citation)
 

  • Hanvold TN, Sterud T, Kristensen P, Mehlum IS. Mechanical and psychosocial work exposures: the construction and evaluation of a gender-specific job exposure matrix (JEM). Scand J Work Environ Health. 2019; 45(3): 239-47. doi: 10.5271/sjweh.3774. Epub 2018 Nov 13.

References (weblinks)
 

  • https://www.sjweh.fi/show_abstract.php?abstract_id=3774

Attachments
 

Year JEM was developed
  2018
Agents
 

  • Ergonomics, Physical Workload, and Injury Related
  • Psychosocial Domains

Ergonomics, Physical Workload, and Injury Related
 

  • Awkward work postures (e.g. kneeling/squatting, elevated arms, neck flection, back bent forward without support)
  • Physical work load (e.g. heavy lifting of people or objects, pushing/pulling)
  • Standing work
  • Other (specify)

Ergonomics, Physical Workload, and Injury Related | Specify: Other
  Hands above shoulder height; Standing/walking
Occupation Axis
  Yes
Coding system
 

  • ISCO 1988
  • Other

Specify: Other
  (the Norwegian 1998 version of ISCO-88, called STYRK-98)
Coding system (Number of digits used)
  4
Industry Axis
  No
Intensity
  No
Probability
  Yes
Probability categories/levels
  Exposed/Non-exposed
Duration
  No
Frequency
  No
Peaks
  No
Data source(s)
 

  • Self-reported data

Studies to which the JEM has been applied: Texts
 

  • Not published yet, only presented at conferences

Relation with other JEMs
  Similarities with the Finnish JEM for Physical Risk Factors in Low Back Pain (Solovieva et al. 2012)
Validation studies done: Texts
 

  • Agreement between the individual- and JEM-based exposure estimates was evaluated, with kappa, sensitivity and specificity measures. Predictive validity was assessed by testing the associations between low-back pain and the individual- and JEM-based exposure

Validation studies done: Links
 

  • https://www.sjweh.fi/show_abstract.php?abstract_id=3774 (same article that describes development of the JEM)

Availability
 

  • Upon request

Strengths
  Gender-specific. Predictive validity was assessed by testing the associations between low-back pain and the individual- and JEM-based exposure
Weaknesses
  Dichotomous