Table 2. Descriptive Statistics at T1.

	Sample Part 1 (N=362)				Sample Part 2 (N=75)
T1 Characteristics	M	SD	Min.	Max.	M	SD	Min.	Max.
Family
Family income (median)	$20,000-29,999		<$5,000	$50,000+	$20,000-29,999		<$5,000	$50,000+
Family size	5.67	1.98	2	11	6.27	1.94	3	11
Family conflict	1.52	1.52	0	8	1.21	1.31	0	5
Maternal healtha	1.99	0.76	0	3	2.16	0.75	0	3
Adult with intellectual disability/DS
Age	33.33	7.26	15	58	28.90	5.87	15	43
Adaptive behavior	21.15	7.61	0	34	23.23	5.99	5.00	33.00
Healtha	3.35	0.71	1	4	3.51	0.62	2	4
Social support network
Network sizeb	6.88	2.62	1	10	7.04	2.65	2.00	10.00
Age of contacts	49.39	9.77	27.56	78.33	47.42	9.01	31.38	74.00
Years known	25.88	7.46	8.75	52.60	23.37	5.54	12.10	35.00
Geographic proximityc	0.89	0.19	0.14	2.20	0.86	0.25	0.20	2.20
Frequency of contactd	5.46	0.92	2.89	7.00	5.42	0.89	3.50	7.00
Inclusion in mother's networke	0.52	0.26	0	1	0.56	0.24	0.00	0.90

^a1 = very poor/poor, 2 = fair, 3 = good, 4 = excellent

^bNumber of contact listed out of 10

^cProportion of contacts within 1 hour drive

^d0 = never to 7 = daily

^eProportion of contacts included in mother's network