Table 1

Measures of diagnostic accuracy

ExperienceCase loadAll participants
Across all asymmetry levels
All participants
For 40% asymmetry and above
Student<1 year≥6 years<3 to 1011–2021+
Forelimb
 Sensitivity0.690.710.680.660.740.740.690.92
 Specificity0.810.620.720.710.810.580.720.72
 PPV0.780.650.710.690.800.640.710.77
 NPV0.720.680.690.670.760.690.700.90
Hindlimb
 Sensitivity0.840.830.760.810.860.520.810.88
 Specificity0.290.250.290.230.360.170.280.28
 PPV0.540.520.520.510.570.390.530.55
 NPV0.640.590.540.540.720.260.590.71
  • Sensitivity, specificity, positive predictive value (PPV) and negative predictive value (NPV) for the classification as lame (irrespective of the affected limb) or sound. PPV and NPV assume a 1:1 ratio of sound and lame horses presenting for evaluation.