Table 2.

Summary of BIS scores and subscale scores.

	Mean ± Std.	Min	Max	R	P
Mean BIS	67.6±16.1	44	95	–	–
BIS 1st order attentional subscale	11.8±4.1	5	19	0.82	4.9 × 10−6
BIS 1st order cognitive instability subscale	7.0±1.8	4	10	0.79	1.7 × 10−5
BIS 1st order motor subscale	15.2±3.4	11	22	0.78	2.7 × 10−5
BIS 1st order perseverance subscale	7.8±2.3	4	11.5	0.78	3.4 × 10−5
BIS 1st order self-control subscale	13.8±4.3	7	21	0.83	2.6 × 10−6
BIS 1st order cognitive complexity subscale	12.0±3.7	6	19	0.88	1.6 × 10−7

R denotes correlation coefficient comparing subscore against overall BIS score (sum of 1st order subscores). P indicates p-value of statistical test for significant correlation with df = 19.