Table 3.

ROC Analyses

	SSWS	MWS	WSRdiff
AUC	0.69 (0.62, 0.76)	0.71 (0.64, 0.77)	0.64 (0.56, 0.71)
Cutpoint (m/s)	0.76	1.13	0.24
Sensitivity	65.4%	76.6%	56.1%
Specificity	70.9%	60.0%	70.9%
+LR	2.25	1.92	1.93
−LR	0.49	0.39	0.62

Abbreviations: SSWS, self-selected walking speed; MWS, maximal walking speed; WSRdiff, walking speed reserve calculated as a difference (maximal walking speed – self-selected walking speed); AUC, area under the receiver operating characteristic curve; m/s, meters per second; +LR, positive likelihood ratio; −LR, negative likelihood ratio