NP (n=24) | Non-NP (n=48) | P value | |

Demographics | |||

Age (years), mean (SD) | 64.5 (6.9) | 65.7 (7.3) | 0.491 |

BMI, mean (SD) | 30.7 (5.9) | 29.1 (6.2) | 0.295 |

Female, n (%) | 20 (83%) | 38 (79%) | 0.761* |

Matching variables | |||

KOOS pain, mean (SD) | 50.8 (15.1) | 49.8 (13.1) | 0.777 |

SF-36 pain, mean (SD) | 34.1 (22.8) | 39.8 (16.8) | 0.285 |

*Fisher’s exact test.

BMI, body mass index; KOOS, Knee injury and Osteoarthritis Outcome Score; non-NP, matched controls; NP, neuropathic pain; SF-36, Short form 36.