![]() Their correlations with ODI and also with Short Form of McGill Pain Questionnaire (SF-MPQ) and Beck Depression Inventory (BDI) can define their properties. The aim of this study was to assess and compare NRS and VAS in the group of patients who underwent discectomy as a treatment of pharmacologically refractory LRP/LBP. An ODI score ≤22 score could be used as a criterion of treatment success of patients with a lumbar spine disorders. ODI also assesses the usefulness of anaesthetic techniques applied during surgery, and it is a valuable tool for appraising illness perceptions in a group of patients affected by chronic low back pain. Currently, ODI is used as a functional indicator of the effectiveness of surgical procedures for treating different vertebral column and spine disorders. ![]() The current version was published in the Spine in the year 2000, and it is now registered with the International Consortium for Health Outcomes Measurement as a standard outcome measure. This validated questionnaire was first published by Fairbank et al. It is important to remember that the first question concerns measuring PI by the necessity of painkillers usage. The Oswestry Disability Index (ODI) derived from the self-reported Oswestry Low Back Pain Questionnaire was used to quantify disability for LBP and is considered as a “functional scale.” The patient is asked to assess how the leg and back pain affects nine, daily activities. That confusion interferes with objective evaluation and comparing the results of research studies.įunctional disability is another value to consider evaluating endpoint surgery outcome. The popularity of both scales sometimes causes VAS to be mistaken as NRS and vice versa. Although many studies have shown a high correlations between VAS and NRS, NRS shows greater compliance and ease of use compared to VAS. Conducting of VAS, the patient is asked for visualization of his pain as a point on 10 cm line presented on paper. NRS is 11-points (NRS-11) or 101-points (NRS-101) scale which counts the pain and is wildly used in clinical settings because it is easy to administer and score. Two such scales numerical rating scale (NRS) and visual analogue scale (VAS) have been used since 1950. One applies different scales which mainly evaluate PI. Nowadays, the assessment of pain relies on subjective evaluation, due to lack of objective biochemical markers. In many studies, the reduction of pain intensity (PI) is still considered a parameter of surgical treatment efficacy. The evaluation of LBP/LRP treatment effects is still difficult due to insufficient outcome parameters used. An evaluative endpoint of such treatment is not defined. Reliable assessment of discectomy results in patients with low back pain (LBP) and lumbar radicular pain (LRP) still remains a challenge. The measurement of NRS-L 1 month after microdiscectomy seems to give quick insight into the effectiveness of the procedure. NRS and VAS are not parallel scales and assess different aspects of pain. The results showed that PI measurements by NRS-L/NRS-B and VAS mutually correlate and impair functionality evaluated by ODI (convergent validity) but in different modes (differential validity). PRI correlated significantly ( ) and more stronger with VAS than with NRS-L and NRS-B in every points of assessment. 3 months after surgery, there was higher correlations between ODI and VAS (rs = 0.634) than NRS-L (rs = 0.265). Before surgery, the most significant correlation was found between ODI and NRS-L (rs = 0.494 ), the lowest with NRS-B (rs = 0.319 ). The rate of decline of PI measured by NRS-L correlated statistically significant (rs = 0.366 ) with ODI 1 month after surgery. NRS-L and NRS-B ratings remained at a similar level while VAS and ODI decreased after 3 months. ![]() NRS-L, NRS-B, VAS, and ODI were significantly lower ( ) 1 month after microdiscectomy. Patients, who underwent microdiscectomy, were prospectively enrolled into the study and assessed using VAS and NRS for the back (NRS-B) and the leg (NRS-L), Short Form of McGill Pain Questionnaire (SF-MPQ) included Pain Rating Index (PRI) and Oswestry Disability Index (ODI) 1 day before and 1 month and 3 months after the procedure. Many studies have shown strong similarities between those two scales, but the direct interchange is difficult. The two most commonly used scales of PI are NRS and VAS. The pain intensity (PI) reduction is a parameter of surgical treatment efficacy. To compare the viability of the numerical rating scale (NRS) and the visual analogue scale (VAS) as a pain assessment tools among a large cohort of patients who underwent microdiscectomy.
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