Table 7.

Comparison of performance measures between treatment-naïve participants and those who received a medication prior to enrolment

Performance measures	Predictor	Outcome: PGA < 1 cm
		Treatment naïve (n = 46)	Treatment prior to enrolment (NSAIDs, MTX, prednisone) (n = 36)
AUC	Clinical–biological	0.80	0.80
F-measure	Clinical–biological	0.74	0.75
Accuracy	Clinical–biological	0.81	0.81
Precision	Clinical–biological	0.75	0.75
Specificity	Clinical–biological	0.76	0.73
Sensitivity/recall	Clinical–biological	0.75	0.75

AUC: area under the curve; PGA: physician global assessment.