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Table 4 ROC and 95% CI for risk factor groups comparing different participants based on neuropathic-like knee pain profile

From: Neuropathic-like knee pain and associated risk factors: a cross-sectional study in a UK community sample

  ROC 95% CI PRC (%) PRC 95% CI
Definite NKP vs. non-NKP
 Full* 0.90 0.88; 0.92 100%
 Without peripheral 0.89 0.87; 0.91 3% −2.5; 7.5
 Without central 0.87 0.85; 0.89 8% 2.5; 12.5
 Without comorbidities 0.89 0.88; 0.91 3% −2.5; 5
Non-NKP vs. no KP
 Full 0.70 0.69; 0.72 100%
 Without peripheral 0.68 0.66; 0.69 10% 5; 20
 Without central 0.68 0.66; 0.69 10% 5; 20
 Without comorbidities 0.69 0.67; 0.70 5% 0; 15
  1. Abbreviations: KP Knee pain, NKP Neuropathic-like knee pain, PRC Proportional risk contribution
  2. ROC results for the full model including age, gender, body mass index and pain severity
  3. Peripheral = significant injury, nodal osteoarthritis
  4. Central = anxiety, depression, Pain Catastrophising Scale (by highest tertile), fatigue, fibromyalgia
  5. Comorbidities: hyperlipidaemia, diabetes, widespread pain
  6. Pain severity was not included from the second ROC analysis comparing non-NKP with no KP participants