Table 3. Cut-off values and performance metrics for Youden, K-means Mean and Top 2

Variables	Methods	Cut-off	AUC	Sensitivity	Specificity	Odds ratio	(95% CI)
YBT composite score (%)	Youden	85.99	0.61	0.66	0.57	2.62	(1.21–5.68)
	K-means Mean	86.14	0.61	0.64	0.57	2.43	(1.13–5.23)
	K-means Top 2	96.98	0.59	0.30	0.87	2.93	(1.10–7.78)
YBT anterior direction distance (cm)	Youden	73.37	0.57	0.38	0.80	2.35	(1.00–5.52)
	K-means Mean	69.70	0.53	0.54	0.52	1.24	(0.59–2.63)
	K-means Top 2	75.98	0.55	0.27	0.83	1.83	(0.72–4.63)
YBT posterolateral direction distance (cm)	Youden	71.26	0.59	0.57	0.63	2.27	(1.05–4.87)
	K-means Mean	70.02	0.54	0.61	0.46	1.33	(0.62–2.84)
	K-means Top 2	80.56	0.58	0.34	0.81	2.26	(0.94–5.46)
YBT posteromedial direction distance (cm)	Youden	92.86	0.62	0.45	0.87	5.41	(2.09–14.04)
	K-means Mean	85.93	0.58	0.57	0.59	1.94	(0.91–4.14)
	K-means Top 2	96.31	0.58	0.29	0.87	2.69	(1.00–7.18)

YBT, Y-balance test.