Table 4.

Summary of the areas under the receiver operating characteristic curves (95% Confidence interval)

Physical attack within next shift	Derivation sample	Validation sample
Original BVC	0.87 (0.74–0.99)	0.86 (0.80–0.93)
VAS (Transformed)	0.94 (0.89–0.97)	0.74 (0.65–0.83)
BVC-CH	0.95 (0.90–0.98)	0.83 (0.75–0.90)
Physical attack OR intense preventive measure within next shift	Derivation sample	Validation sample
Original BVC	0.82 (0.75–0.89)	0.88 (0.86–0.92)
VAS (Transformed)	0.87 (0.82–0.91)	0.85 (0.81–0.89)
BVC-CH	0.89 (0.84–0.94)	0.90 (0.86–0.93)