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Table 4 Prognostic variables in subgroup analysis

From: Effectiveness of percutaneous laser disc decompression versus conventional open discectomy in the treatment of lumbar disc herniation; design of a prospective randomized controlled trial

Demographic variables:

   *Age < 40 years versus > 40 years

   *Higher education versus lower education

   *Non-physical versus physically demanding jobs

Anamnestic variables and neurological variables

   *Quetelet index < 25 versus > 25

   *Influence of sitting on complaints versus no influence

   *Straight leg raising < 30° versus low-back pain

MRI variables

   *Median versus mediolateral and lateral herniation

   *High disc space versus low disc space

   *Higher signal versus lower signal of disc on T2 weighted images

   *Bud-herniation versus broad based herniation

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BMC Musculoskeletal Disorders

ISSN: 1471-2474

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