Table 2.

HAMD scores, HAMA scores and behavioral data [mean (SD)] in the ND group (n = 25) and HC group (n = 25).

Variable	ND					HC
	HAMD	HAMA	RT (ms)	Hit rate	Error rate	HAMD	HAMA	RT (ms)	Hit rate	Error rate
Time 1	13.8 (2.5)	10.3 (2.4)	395.1 (25.2)	0.825 (0.040)	0.208 (0.050)	13.4 (1.9)	10.5 (2.0)	382.1 (19.8)	0.915 (0.038)	0.102 (0.0113)
Time 2	13.6 (2.2)	10.1 (2.8)	394.3 (22.0)	0.826 (0.397)	0.207 (0.488)	13.3 (2.1)	10.2 (2.6)	385.4 (20.3)	0.920 (0.029)	0.101 (0.012)

ND, Nicotine dependence; HC, Healthy control; SD, Standard deviation; RT, reaction time; Hit rate, rate of correct responses for target stimuli; Error rate, rate of incorrect responses for target stimuli.