| Completed | Effectiveness of Group GDS and Individual GDS for Treatment of Low Back Pain in Primary Care Subacute Nonspecific Low Back Pain, Chronic Nonspecific Low Back Pain | N/A | 2010-05-01 |
| Completed | Association of Lumbar MODIC Changes With Chronic Low Back Pain in Southern European Subjects Low Back Pain | — | 2010-02-01 |
| Completed | Association Between Low Back Pain and Quality of Sleep Quality of Sleep, Subacute or Chronic Low Back Pain, Disability | — | 2009-09-01 |
| Completed | Association Between Neck Pain and Quality of Sleep Chronic Neck Pain, Disability | — | 2009-09-01 |
| Completed | Prevalence of Low Back and Pelvic Pain in Pregnant Women Low Back Pain, Pelvic Pain | — | 2009-06-01 |
| Completed | Active Management for Low Back Pain for 6 to 8 Year Old Schoolchildren Low Back Pain | N/A | 2009-02-01 |
| Terminated | Measurement of Substance P in Saliva of Low Back Pain Patients Low Back Pain | N/A | 2009-02-01 |
| Terminated | The Effect of Ozone Therapy for Lumbar Herniated Disc Lumbar Herniated Disc | Phase 2 | 2008-12-01 |
| Terminated | The Effect of Two Short Education Programs for Nonspecific Low Back Pain in a Workers' Health Care Organizatio Low Back Pain | N/A | 2008-09-01 |
| Completed | Modic Changes and Associated Features in Southern European Chronic Low Back Pain Patients Low Back Pain | — | 2008-05-01 |
| Completed | The Influence of Different Factors on Workers' Disability Due to Low Back Pain Low Back Pain | — | 2008-02-01 |
| Completed | Back Pain Prevalence in Wheelchair Users and Associated Risk Factors Back Pain | — | 2007-11-01 |
| Terminated | World Health Organization Disability Assessment Schedule (WHODAS-II) for Patients With Symptomatic Lumbar Disc Lumbar Disc Herniation | N/A | 2007-04-01 |
| Terminated | WHODAS-II for Patients With Nonspecific Low Back Pain Low Back Pain | N/A | 2007-04-01 |
| Terminated | World Health Organization Disability Assessment Schedule II (WHODAS-II) for Patients With Symptomatic Lumbar S Lumbar Spinal Stenosis | — | 2007-04-01 |
| Completed | Health Education vs. Health Education Plus Physical Therapy for Low Back Pain Patients Low Back Pain | Phase 2 | 2007-03-01 |
| Withdrawn | A Trial on the Effect on Low Back Pain Related Disability of Different Health Education Programs for Retired P Low Back Pain | N/A | 2006-12-01 |
| Completed | The Influence of Coping Strategies and Catastrophizing on Patients With Back and Neck Pain Back Pain, Neck Pain | — | 2006-11-01 |
| Withdrawn | Prevalence of Back Pain and Associated Risk Factors in 10-12 Year Old Schoolchildren Low Back Pain | — | 2006-09-01 |
| Completed | Effectiveness of Cognitive Behavioral Treatment and Mindfulness Based Stress Reduction (MBSR) for Chronic Low Chronic Low Back Pain | Phase 2 | 2006-05-01 |
| Completed | Validation of the Spanish Version of the Neck Disability Index Neck Pain, Cervicalgia | — | 2005-10-01 |
| Completed | Treatment for Nonspecific Low Back Pain in Primary Care: a Trial on Different Health Education Booklets Low Back Pain | Phase 2 | 2005-10-01 |