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. Author manuscript; available in PMC: 2019 Aug 29.
Published in final edited form as: Health Econ. 2013 Feb 21;23(2):159–181. doi: 10.1002/hec.2907

Table A1.

Add Health descriptive statistics: sibling sample

Variable Observed Mean SD Min
Currently working (10+ h/week) 2,948 0.75 0.43 0 1
Earnings last year ($) 3,468 31,908.40 34,372.17 0 920,000
Social program participation 3,462 0.26 0.44 0 1
Diagnosed ADHD 3,468 0.05 0.21 0 1
Early diagnosis 3,464 0.02 0.15 0 1
Late diagnosis 3,464 0.02 0.15 0 1
Years of schooling 3,468 14.14 2.07 8 21
Ever married 3,467 0.50 0.50 0 1
Test score (wave 3) 3,468 99.97 14.59 9 123
Test score missing 3,468 0.16 0.37 0 1
Age (wave 4) 3,468 28.87 1.76 24.41667 33.58333
Female 3,468 0.53 0.50 0 1
Hispanic people 3,468 0.14 0.35 0 1
Black people 3,468 0.24 0.42 0 1
Maternal years of education 3,468 13.14 2.22 0 17
Family income as adolescent ($1,000 s) 3,468 45.24 41.13 0 800
Married parents 3,468 0.70 0.43 0 1
Test score (wave 1) 3,468 99.25 14.23 15 146
Rural status 3,468 0.27 0.44 0 1
Missing family information 3,468 0.28 0.45 0 1
Childhood mistreatment scale 3,468 0.02 0.61 −0.46231 4.035326
Ever diagnosed asthma 3,468 0.15 0.36 0 1
Low birth weight 3,468 0.19 0.37 0 1
Ever diagnosed with diabetes 3,468 0.03 0.16 0 1
Mistreatment missing 3,468 0.23 0.42 0 1
Low birth weight missing 3,468 0.17 0.38 0 1
Marijuana use (wave 1) 3,468 0.14 0.34 0 1
Obese (wave 1) 3,468 0.07 0.25 0 1
Depressed (wave 1) 3,468 0.09 0.28 0 1
Sexual initiation (wave 1) 3,468 0.37 0.48 0 1
Smoke (wave 1) 3,468 0.27 0.44 0 1
Drink (wave 1) 3,468 0.40 0.49 0 1