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. 2010 Sep;100(9):1687–1695. doi: 10.2105/AJPH.2009.179424

TABLE 2.

Log-Odds Estimates From Random Intercept Logit Models Predicting Smoking or Drinking and Educational Aspirations Among Non-Hispanic Black and White Female Students, Regressed on Within-School Segregation: Wave 1, National Longitudinal Study of Adolescent Health, 1994–1995

Smoking or Drinkinga (n = 3579)
Educational Aspirationsb (n = 3579)
Model 1, b (SE) Model 2, b (SE) Model 1, b (SE) Model 2, b (SE)
Intercept 0.09 (0.14) −0.11 (0.15) 2.04*** (0.21) 2.07*** (0.23)
Individual-level variables
Age,c y 0.21*** (0.03) 0.22*** (0.03) −0.10*** (0.04) −0.10* (0.04)
Race
    White (Ref) 1.00 1.00 1.00 1.00
    Black −0.68*** (0.16) −0.69*** (0.16) 0.61* (0.24) 0.65** (0.24)
Family structure
    Nuclear (Ref) 1.00 1.00 1.00 1.00
    Stepfamily 0.58*** (0.14) 0.58*** (0.14) −0.37 (0.19) −0.34 (0.19)
    Female headed 0.42*** (0.10) 0.40*** (0.10) −0.28 (0.16) −0.26 (0.16)
    Other 0.47*** (0.09) 0.47*** (0.09) −0.51*** (0.13) −0.48*** (0.13)
Family SES 0.08 (0.05) 0.06 (0.06) 0.61*** (0.08) 0.56*** (0.08)
School-level variables
Within-school segregationd
    Low (≤ 9.95; Ref) 1.00 1.00 1.00 1.00
    Medium (9.96–29.10) 0.12 (0.16) 0.08 (0.15) 0.11 (0.24) 0.14 (0.22)
    High (> 29.10) 0.31 (0.17) 0.28 (0.16) 0.11 (0.26) 0.11 (0.23)
School SES 0.02 (0.11) 0.34* (0.17)
White students,c % 0.003 (0.002) 0.001 (0.003)
School size
    Small (1–400 students) 0.04 (0.24) 0.32 (0.44)
    Medium (401–1000 students) 0.15 (0.11) −0.33* (0.16)
    Large (1001–4000 students; Ref) 1.00 1.00
Region
    West 0.35* (0.15) −0.35 (0.21)
    Midwest 0.37** (0.12) −0.03 (0.18)
    Northeast 0.27* (0.14) −0.06 (0.21)
    South (Ref) 1.00 1.00
School communitye
    Rural −0.08 (0.16) 0.07 (0.25)
    Urban–suburban (Ref) 1.00 1.00
School type
    Public (Ref) 1.00 1.00
    Private −0.28 (0.27) 0.69 (0.49)
Cross-level interactions
Black x medium segregation −0.24 (0.20) −0.16 (0.19) −0.30 (0.29) −0.29 (0.28)
Black x high segregation −0.72** (0.23) −0.59** (0.23) 0.07 (0.34) 0.04 (0.34)
ρ 0.02* 0.006* 0.05* 0.02*
Log likelihood −2291.7 −2282.8 −1348.6 −1334.7

Note. SES = socioeconomic status.

a

Unconditional model: ρ = 0.05; log likelihood = −2406.

b

Unconditional model: ρ = 0.11; log likelihood = −1407.

c

Age was centered at 16, percentage of White students at 57%.

d

Within-school segregation calculated with the dissimilarity index, a measure of the unevenness in the distribution of Black and White students across levels of the English curriculum. The index ranged from 0.96 to 100, with a mean dissimilarity index of 23; the ranges shown correspond to 3 dummy variables.

e

Urban–suburban included consolidated metropolitan statistical areas or metropolitan statistical areas with 2500 or more residents; rural included all others.

*P < .05, **P < .01, ***P < .001.