(a) Results of likelihood Chi square test for impulsiveness related variables associated determinants of premature treatment drop-out.

Characteristics	Total	Treatment completed	Dropped out of treatment	p
	N = 832	N = 525	N = 307
Patient experienced abuse or violence				0.0475
Yes	192 (25.7%)	110 (57.3%)	82 (42.7%)
No	554 (74.3%)	362 (65.3%)	192 (34.7%)
Documented cases of aggressive behavior towards others				0.0082
Yes	141 (16.9%)	75 (53.2%)	66 (46.8%)
No	691 (83.1%)	450 (65.1%)	241 (34.9%)
Suicide attempts				0.5113
None	704 (84.9%)	448 (63.6%)	256 (36.4%)
1 attempt	78 (9.4%)	47 (60.3%)	31 (39.7%)
2 attempts	28 (3.4%)	18 (64.3%)	10 (35.7%)
3 or more attempts	19 (2.3%)	9 (47.4%)	10 (52.6%)
Patients in judicial proceeding				0.8027
Yes	15 (1.8%)	9 (60.0%)	6 (40.0%)
No	817 (98.2%)	516 (63.2%)	301 (36.8%)
Patients on probation				0.0813
Yes	33 (4.0%)	16 (48.5%)	17 (51.5%)
No	799 (96.0%)	509 (63.7%)	290 (36.3%)
Patients with history of imprisonment				0.0001
Yes	700 (84.1%)	58 (43.9%)	74 (56.1%)
No	132 (15.9%)	467 (66.7%)	233 (33.3%)
Intravenous drug use				0.0001
Yes	117 (14.1%)	49 (41.9%)	68 (58.1%)
No	715 (85.9%)	476 (66.6%)	239 (33.4%)
Number of relatives of first degree with addiction disorder				0.9800
None	490 (59.0%)	311 (63.5%)	179 (36.5%)
1	260 (31.3%)	164 (63.1%)	96 (36.9%)
2	64 (7.7%)	38 (59.4%)	26 (40.6%)
3	14 (1.7%)	9 (64.3%)	5 (35.7%)
4	3 (0.3%)	2 (66.7%)	1 (33.3%)
Addiction in relatives of second degree				0.2120
Yes	207 (24.9%)	138 (66.7%)	69 (33.3%)
No	624 (75.1%)	386 (61.9%)	238 (38.1%)
Number of relatives of first degree with suicide				0.1211
None	809 (97.5%)	510 (63.0%)	299 (37.0%)
1	19 (2.3%)	13 (68.4%)	6 (31.6%)
2	2 (0.2%)	0 (0%)	2 (100%)
Suicide attempts in relatives of second degree				0.7789
Yes	29 (3.5%)	19 (65.5%)	10 (34.5%)
No	802 (96.5%)	505 (63.0%)	297 (37.0%)