Table 2.

Means and Standard Deviations of Study Variables

Variables	n	M	SD
% Days of alcohol use
Baseline	183	21.24	29.64
3 months	165	13.92	25.36
6 months	165	11.73	22.08
12 months	161	12.40	24.73
18 months	163	11.11	22.62
% Days of marijuana use
Baseline	183	28.01	38.65
3 months	165	19.17	34.09
6 months	165	20.96	36.72
12 months	161	17.18	33.62
18 months	163	21.29	36.40
% Days of cocaine use
Baseline	183	9.59	21.95
3 months	165	4.55	15.42
6 months	165	4.46	16.05
12 months	161	4.37	15.00
18 months	163	4.24	16.23
% Days of opioid use
Baseline	183	33.09	41.15
3 months	165	13.16	28.82
6 months	165	13.85	31.31
12 months	161	11.32	27.78
18 months	163	14.33	32.08
Mothers’ autonomy and relatedness promoting behaviors
Baseline	181	6.93	2.19
6 months	118	7.26	2.43
18 months	111	7.06	2.23
Mothers’ undermining autonomy behaviors
Baseline	181	2.11	1.53
6 months	118	1.94	1.56
18 months	111	1.58	1.58
Mothers’ undermining relatedness behaviors
Baseline	181	.92	1.07
6 months	118	87	1.13
18 months	111	.50	.77
Children’s autonomy and relatedness promoting behaviors
Baseline	181	4.06	2.58
6 months	118	4.49	2.78
8 months	111	4.13	2.55
Children’s undermining autonomy behaviors
Baseline	181	1.51	1.40
6 months	118	1.14	1.31
18 months	111	.99	1.13
Mothers’ undermining relatedness behaviors
Baseline	181	1.13	1.33
6 months	118	1.09	1.09
18 months	111	.79	1.03