Table 1.

Summary Statistics: Add Health Data N=10,638

Variable	Wave	Mean	Std Dev	Min	Max
Individual Level Variables
College Enrollment	3	0.56	0.50	0	1
College Encouragement	1	0.37	0.48	0	1
Male	All	0.47	0.50	0	1
Age	3	21.84	1.71	18	27
Black	All	0.22	0.41	0	1
Hispanic	All	0.16	0.36	0	1
Other Race	All	0.08	0.27	0	1
Number of Siblings	1	1.59	1.41	0	13
Has Older Siblings?	1	0.49	0.50	0	1
PVT Score (standardized)	1	0.08	0.96	−6	3
Maternal Education Level^ (years)	1	13.25	2.29	0	17
Family Income^ ($1,000s)	1	46.11	42.95	0	990
Household with Married Parents^	1	0.74	0.44	0	1
Mother Cares	1	4.86	.47	1	5
Teacher Cares	1	3.52	.98	1	5
Parent Missing Data Dummy	1	0.19	0.40	0	1
Grade Level = 7	1	0.15	0.36	0	1
Grade Level = 8	1	0.14	0.35	0	1
Grade Level = 9	1	0.18	0.39	0	1
Grade Level = 10	1	0.20	0.40	0	1
Grade Level = 11	1	0.19	0.39	0	1
Grade Level = 12	1	0.14	0.34	0	1
School/Grade Level Variables
% College Enrollment	3	0.55	0.20	0	1
% College Encouragement	1	0.36	0.14	0	1
% Black	1	0.20	0.25	0	1
% Hispanic	1	0.16	0.21	0	1
% Other Race	1	0.10	0.12	0	1
% Household with Married Parents^	1	0.70	0.12	0	1
Mean Family Income^ ($1,000s)	1	44.96	13.95	18	144
Mean Maternal Education^	1	13.18	0.81	10	16
Rural Status	1	0.27	0.44	0	1

^{^}imputed variable