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

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

	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

Abbreviations: KP Knee pain, NKP Neuropathic-like knee pain, PRC Proportional risk contribution
ROC results for the full model including age, gender, body mass index and pain severity
Peripheral = significant injury, nodal osteoarthritis
Central = anxiety, depression, Pain Catastrophising Scale (by highest tertile), fatigue, fibromyalgia
Comorbidities: hyperlipidaemia, diabetes, widespread pain
Pain severity was not included from the second ROC analysis comparing non-NKP with no KP participants

ISSN: 1478-6362