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. 2022 Apr 28;17(4):e0266729. doi: 10.1371/journal.pone.0266729

Table 1. Individual-, school-, and neighborhood-level Wave I (1994–1995) characteristics of participants in young adulthood at Wave IV (2008–2009; N = 13,926) of the National Longitudinal Study of Adolescent to Adult Health.

N (%) Wave IV Total Sample (N = 13,926) Wave IV Hypertension (N = 2,881) Wave IV No Hypertension (N = 11,045)
Individual-level (N = 13,926) P-Value
Age (years), Mean (SD) 28.94 (1.72) 29.14 (1.71) 28.89 (1.72) P<0.001
Sex P<0.001
 Female 7,373 (53) 1,028 (14) 6,345 (86)
 Male 6,553 (47) 1,853 (29) 4,700 (71)
Race/ethnicity P<0.001
 Non-Hispanic White 7,395 (53) 1,482 (51) 5,913 (80)
 Non-Hispanic Black 2,831 (20) 669 (23) 2,162 (76)
 Asian 768 (6) 164 (6) 604 (79)
 Hispanic 2,190 (16) 407 (14) 1,783 (81)
 Other 172 (1) 41 (1) 131 (76)
 Multiracial 570 (4) 118 (4) 452 (79)
BMI, kg/m2 (WIV) P<0.001
 Under Weight (<18.5) 192 (1) 16 (0.6) 176 (1.6)
 Normal Weight (18.5–24.9) 4,395 (32) 459 (16) 3,936 (35)
 Overweight (25–29.9) 4.199 (30) 818 (29) 3,381 (30.6)
 Obese (≥30) 5,125 (37) 1,568 (55) 3,546 (32)
 Unknown 10 (0.1) 4 (0.1) 6 (0.05)
Current Smoking (WIV) P<0.001
 No 8,916 (64) 1,735 (61) 7,181 (65)
 Yes 4,887 (35) 1,101 (38) 3,786 (34)
 Unknown 108 (1) 30 (1) 78 (1)
Antihypertensive medications
 No 13,417 (96) 2,372 (82) 11,045 (100)
 Yes 509 (4) 509 (18) 0 (0)
Parent Receipt of Public Assistance P = 0.18
 No 12,703 (91) 2,605 (90) 10,098 (91)
 Yes 1,223 (9) 276 (10) 947 (9)
Parental Education P = 0.30
 Less than high school 1,664 (12) 338 (11) 1,326 (12)
 High school graduate/GED 3,611 (26) 815 (28) 2,796 (25)
 Some College 4,154 (30) 876 (30) 3,278 (29)
 College graduate or beyond 4,497 (32) 852 (29) 3,645 (33)
School-level (N = 128)
Mean (SD) Median Minimum Maximum
Percent of students Non-Hispanic White 47.5 (25.5) 55.0 0 85.9
Percent of parents receiving public assistance 10.4 (9.4) 7.2 0 45.4
Percent of parents with college degree 31.7 (16.9) 28.3 5.5 91.2
Neighborhood-level (N = 1,917)
Percent of residents Non-Hispanic White 67.1 (32.5) 79.7 0 100
Percent of residents receiving public assistance 10.5 (9.6) 7.2 0 61.8
Percent of residents with college degree 23.8 (14.6) 20.3 1.1 77.8