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. Author manuscript; available in PMC: 2018 Aug 1.
Published in final edited form as: J Adolesc Health. 2017 Apr 18;61(2):163–170. doi: 10.1016/j.jadohealth.2017.02.005

Table 1.

Sample characteristics, weighted (n=13361)*

Variable Name Total sample
N (%) or mean (SD)
Male
N (%) or mean (SD)
Female
N (%) or mean (SD)
Smoking trajectory
 Nonsmoker 6404 (44%) 2810 (21%) 3594 (23%)
 Early establisher 2802 (23%) 1334 (11%) 1468 (12%)
 Late establisher 2514 (21%) 1619 (14%) 895 (7%)
 Former Smoker 1641 (12%) 724 (5%) 917 (7%)

BMI (avg.) (Wave I) 22.53 (4.56) 22.76 (4.57) 22.28 (4.53)

BMI (avg.) (Wave IV) 28.18 (6.82) 28.27 (5.90) 28.09 (7.77)
Waist Circumference (avg.) (Wave IV) (cm) 98.01(17.13) 99.75 (15.16) 96.10 (18.98)

Age (Wave I) 15.47 (1.80) 15.56 (1.78) 15.38 (1.80)
Age (Wave IV) 28.40 (0.11) 28.50 (0.11) 28.30 (0.11)

Race/Ethnicity
 Non-Hispanic White 7538 (70%) 3711(36%) 3827 (35%)
 Non-Hispanic Black/African American 2656 (14%) 1194 (7%) 1462 (7%)
 Hispanic/Latino 2127 (11%) 1047 (6%) 1080 (5%)
 Asian 779 (3%) 409 (2%) 370 (1%)
 Other 261 (2%) 126 (1%) 135 (1%)

Parental household income (Wave I)
 Less than $25,000 2872 (22%) 1364 (11%) 1508 (11%)
 $25,000 to less than $50,000 3413 (27%) 1703(14%) 1710 (13%)
 $50,000 to less than $75,000 2361 (18%) 1192 (10%) 1169 (9%)
 $75,000 to less than $100,000 1487 (11%) 740 (6%) 747 (5%)
 Missing 3228 (22%) 1488 (11%) 1740 (11%)

Young adult educational attainment (Wave IV)
 Less than high school 1039 (9%) 626 (6%) 413 (3%)
 High School 2150 (17%) 1241 (11%) 909 (6%)
 Some college/technical school 5839 (43%) 2769 (21%) 3070 (21%)
 College 2672 (20%) 1227 (10%) 1445 (10%)
 Grad/professional school 1661 (11%) 624 (5%) 1037 (7%)
*

Excludes women who are pregnant at Wave IV and individuals on active military duty at Wave IV. Waist circumference was missing for an additional n=119 participants.