Table 5. Cut-off points with sensitivity and specificity.

Weekend average usage hours	Cut-off point [hours]	1.5	2.5	3.5	4.5*	5.5	6.5	7.5	9.0	10.5	11.5
	Sensitivity [%]	95.4	83.1	72.3	64.6	46.2	38.5	35.4	24.6	21.5	20.0
	Specificity [%]	26.4	50.9	64.2	73.6	83.0	88.7	88.7	92.5	92.5	92.5
BAS-Drive	Cut-off point	4.5	6.0	7.5	8.5	9.5	10.5*	11.5	12.5	13.5	15.0
	Sensitivity	100.0	100.0	98.6	94.2	78.3	52.2	36.2	17.4	7.3	2.9
	Specificity	4.1	6.1	8.2	32.7	55.1	83.7	89.8	95.9	98.0	100.0
BSCS	Cut-off point	32.5	33.5	34.5	35.5	36.5	37.5*	38.5	39.5	40.5	41.5
	Sensitivity	96.4	92.7	89.1	89.1	87.3	85.5	78.2	65.5	52.73	45.45
	Specificity	25.4	39.7	41.3	42.9	47.6	54.0	60.3	68.3	74.6	80.95

Note

* Optimal cut-off