Safety And Efficacy Of Celecoxib Versus Sodium Diclofenac In The Treatment Of Acute Low Back Pain

Inclusion criteria: * Aged between 18 and 65 years * Acute low back pain that falls into 1st or 2nd class of 'Quebec Task Force' classification of moderate to severe intensity (\>50 mm in the VAS) * Acute low back pain onset \<72 hours prior to study inclusion and \>6 weeks after the last acute low back pain episode Exclusion criteria: * Scoliosis or known history of inflammatory arthritis, chronic pain, metastasis, Paget's disease, or any other disease that cause pain * Low back pain from major trauma or visceral disorder * Esophageal ulcers, gastric or duodenal ulcers or bleeding within 30 days prior to being administered study drug