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Table 1 Definitions and corresponding prevalence of musculoskeletal problems in the neck-shoulder region among all VDU users (n = 627)

From: Agreement between a self-administered questionnaire on musculoskeletal disorders of the neck-shoulder region and a physical examination

  Prevalence (%)
Questionnaire  
Primary definition : Presence of symptoms for at least 3 days during the last 7 days, with worst pain intensity greater than 50 mm on the 100 mm VAS scale. 17.1
Limitations in activities of daily living : Primary definition and a score equal or greater than 2 on the functional limitations scale. 8.2
Limitations in work activities : Primary definition and limited work activities.* 2.9
Limitations in household activities : Primary definition and limited household activities.* 4.5
Limitations in leisure activities : Primary definition and limited leisure activities.* 5.0
Physical examination  
Primary definition: any one of the following three :
• Diminution ≥ 30% of the normal active range of motion (American Academy of Orthopaedic Surgeons, 1966);
• Diminution of normal muscular strength (score ≤ 4 on the Lovett scale) (Daniels, 1995);
• Pain of moderate intensity or worse (≥ 3 on the 11-point Numerical Rating Scale) produced at the relevant site during any maneuver.
41.9
Definition based solely on decreased range of motion or muscle strength : One of the following two :
• Diminution ≥ 30% of the normal active range of motion (American Academy of Orthopaedic Surgeons, 1966);
• Diminution of normal muscular strength (score ≤ 4 on the Lovett scale) (Daniels, 1995).
26.2
Definition based solely on pain manifested during maneuvers :
• Pain of moderate intensity or worse (≥ 3 on the 11-point Numerical Rating Scale) produced at the relevant site during any maneuver.
30.1
  1. *Measured as yes/no items