Table 1.

Summary statistics, Add Health: family sample (n ≈ 3,032)

	Wave	Mean	SD	Min	Max
Dependent variables
Civic engagement in adulthood
Volunteering	3	0.27	0.45	0.00	1.00
Volunteering	4	0.36	0.48	0.00	1.00
Voting	3	0.42	0.49	0.00	1.00
Voting	4	0.39	0.49	0.00	1.00
Donated blood	3	0.17	0.37	0.00	1.00
Registered organ donor	3	0.36	0.48	0.00	1.00
Registered to vote	3	0.71	0.45	0.00	1.00
Psychological well-being
Depression scale	3	4.79	4.10	0.00	24.00
Depression scale	4	5.50	4.33	0.00	27.00
Life satisfaction	3	0.37	0.48	0.00	1.00
Education and earning
Years of schooling	4	13.31	1.96	8.00	19.00
Log earning	4	10.12	1.01	1.61	13.71
HS dropout	4	0.16	0.36	0.00	1.00
College enrollment	4	0.65	0.48	0.00	1.00
Bachelor degree	4	0.32	0.47	0.00	1.00
Independent variables
Youth volunteering
No youth volunteering	Age 12–18	0.58	0.49	0.00	1.00
Youth volunteering (voluntary)	Age 12–18	0.36	0.48	0.00	1.00
Youth volunteering (involuntary)	Age 12–18	0.08	0.27	0.00	1.00
Control variables
Age	1	16.08	1.71	12.00	21.00
Female	All	0.52	0.50	0.00	1.00
White	All	0.56	0.50	0.00	1.00
Black	All	0.23	0.42	0.00	1.00
Hispanic	All	0.14	0.34	0.00	1.00
Other race/ethnicity	All	0.07	0.26	0.00	1.00
First-born child	All	0.38	0.48	0.00	1.00
Grade = 7	1	0.14	0.35	0.00	1.00
Grade = 8	1	0.14	0.34	0.00	1.00
Grade = 9	1	0.19	0.39	0.00	1.00
Grade = 10	1	0.19	0.39	0.00	1.00
Grade = 11	1	0.18	0.38	0.00	1.00
Grade = 12	1	0.14	0.35	0.00	1.00
Grade = missing	1	0.03	0.16	0.00	1.00
Mother’s education	1	13.05	2.37	0.00	17.00
Family income	1	0.45	0.51	0.00	9.99
Rural status	1	0.29	0.46	0.00	1.00

Note. SD = Standard deviation. Summary statistics do not contain imputed values.