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. Author manuscript; available in PMC: 2020 Jan 1.
Published in final edited form as: Addict Behav. 2018 Aug 15;88:77–81. doi: 10.1016/j.addbeh.2018.08.015

Table 1.

Covariate Descriptives

%a (SE) % (SE)
Covariates measured at age 18
Sex Grade of first alcohol use
 Female 53.2 (1.13)  After high school 25.7 (1.27)
 Male 46.8 (1.13)  During high school 48.0 (1.35)
Race/ethnicity  Before high school 19.0 (1.01)
 Black 9.5 (1.11)  Missing indicator 7.4
 White 61.8 (1.71) Binge drinkingc
 Hispanic 15.6 (1.34)  None 81.8 (1.02)
 Other 11.2 (0.92)  Any 16.8 (0.97)
 Missing indicatorb 1.9  Missing indicator 1.4
Parental education
 No college degree 44.5 (1.48)
 College degree for 1+parents 51.4 (1.51)
 Missing indicator 4.1
Covariates measured at age 19/20
Years after high school Living situation
 Modal age 19 53.5 (1.21)  Not living with parents 48.1 (1.56)
 Modal age 20 46.5 (1.21)  Living with parents 51.6 (1.56)
College status  Missing indicator 0.3
 Not in college 25.2 (1.30) Employment
 Part-time/other 11.3 (0.98)  Not employed 39.1 (1.28)
 Full-time (2-year college) 18.2 (1.10)  Employed 57.4 (1.34)
 Full-time (4-year college) 43.9 (1.48)  Missing indicator 3.6
 Missing indicator 1.4

Notes: N(unweighted) = 1,719. Covariates also included year of data collection at age 19/20. Missing data on covariates modeled with missing data indicators as shown.

a

Unadjusted weighted percentage.

b

Missing indicators identify the percentage of the sample with missing data on the noted measure; these cases were included in relational analyses by use of a separate categorical indicator.

c

Binge drinking defined as having 5 or more drinks in a row in the past two weeks.