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KMID : 0363120170300010051
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Korean Journal of Pain
2017 Volume.30 No. 1 p.51 ~ p.58
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Usefulness of four commonly used neuropathic pain screening questionnaires in patients with chronic low back pain: a cross-sectional study
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Gudala Kapil
Ghai Babita
Bansal Dipika
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Abstract
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Background: Recently symptoms-based screening questionnaires have gained attention for screening for a neuropathic pain component (NePC) in various chronic pain conditions. The present study assessed the usefulness of four commonly used NePC screening questionnaires including the Self-completed douleur neuropathique 4 (S-DN4), the ID Pain, the painDETECT questionnaire (PDQ), and the Self-completed Leeds Assessment of neuropathic Symptoms and Signs (S-LANSS) questionnaire in patients with chronic low back pain (CLBP) to assess the presence of NePC.
Methods: This is a single-center cross-sectional study where patients with CLBP, with or without leg pain, were included. Participants were initially screened for NePC presence by a physician according to the regular practice, and later assessed using screening questionnaires. The diagnostic accuracy of these questionnaires was compared assuming the physician-made diagnosis as the gold standard.
Results: A total of 215 patients with CLBP of which 164 (76.3%, 95% CI, 70.2?81.5) had a NePC were included. S-DN4, ID Pain, and PDQ have an area under the curve (AUC) ＞ 0.8 indicating excellent discrimination. However, S-LANSS has an AUC of 0.69 (0.62?0.75), indicating low discrimination. S-DN4 has a significantly higher AUC as compared to ID Pain (d(AUC) = 0.063, P ＜ 0.01) and S-LANSS (d(AUC) = 0.197, P ＜ 0.01). But the AUC of S-DN4 does not significantly differ from that of PDQ (d(AUC) = 0.013, P = 0.62).
Conclusions: S-DN4, ID Pain, and PDQ, but not S-LANSS, have good discriminant validity to screen for NePCs in patients with CLBP. Despite using all the tests, 20?30% of patients with an NePC were missed. Thus, these questionnaires can only be used as an initial clue in screening for NePCs, but do not replace clinical judgment.
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KEYWORD
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Diagnosis, Dimensional measurement accuracies, Neuropathic pain, Pain measurements, Surveys and questionnaires, Symptom assessments, Validation studies
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