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. Author manuscript; available in PMC: 2018 Feb 1.
Published in final edited form as: Addict Behav. 2016 Sep 22;65:13–18. doi: 10.1016/j.addbeh.2016.09.006

Table 2.

Logistic Regression Analyses of Factors Associated with Reporter Agreement

Alcohol Marijuana Cocaine Inhalants Stimulants
OR CI OR CI OR CI OR CI OR CI
Model 1: Adolescent
  Characteristics and
  Environment
    Adolescent Age .67* [.65, .70] .53* [.49, .57] .80* [.66, .96] 1.28* [1.19, 1.37] .76* [.68, .85]
    Adolescent Sex
    (female = ref)		 .85* [.74, .98] .71* [.58, .87] .78 [.39, 1.55] 1.02 [.78, 1.33] .85 [.57, 1.26]
    Adolescent Race
    (White = ref)
     Black/AA .81 [.64, 1.02] .75 [.53, 1.05] 3.97 [.86, 18.35] 1.25 [.80, 1.96] 1.26 [.63, 2.54]
     Other 1.02 [.81, 1.30] .84 [.59, 1.20] 1.16 [.39, 3.49] 1.06 [.67, 1.68] 1.07 [.55, 2.08]
    SES 1.05 [.94, 1.17] 1.06 [.91, 1.24] .89 [.47, 1.67] 1.23a [1.00, 1.50] .89 [.64, 1.24]
    Household Env 1.06 [.99, 1.14] 1.08 [.97, 1.20] 1.23 [.83, 1.82] .99 [.86, 1.13] 1.08 [.88, 1.33]
χ2(6) = 503.37* χ2(6) = 466.01* χ2(6) = 17.58* χ2(6) = 53.41* χ2(6) = 31.49*
n = 4946 n = 4931 n = 4956 n = 4935 n = 4955
Model 2: Collateral Relation
    Relationship
    (mother = ref)
     Father 1.09 [.88, 1.36] 1.03 [.74, 1.42] 1.09 [.33, 3.60] .96 [.62, 1.49] .80 [.44, 1.48]
     Other 1.47 [.95, 2.28] .65 [.39, 1.08] .45 [.11, 1.89] .90 [.42, 1.95] .44 [.19, 1.01]
χ2(2) = 3.68 χ2(2) =2.55 χ2(2) = 1.01 χ2(2) = .095 χ2(2) = 3.37
n = 4941 n = 4926 n = 4951 n = 4930 n = 4950
Model 3: Frequency and Age
  of Use
    Alcohol
    Frequency		 1.90* [1.64, 2.21]
    Alcohol
    Age of First Use		 1.04 [.94, 1.16]
    Marijuana
    Frequency		 1.54* [1.35, 1.74]
    Marijuana
    Age of First Use		 .81* [.69, .95]
χ2(2) = 77.49* χ2(2) = 75.51*
n = 748 n = 418
Model 4: Psychopathology
  /Family History
    Overall
    Psychopathology		 .56* [.49, .64] .45* [.37, .55] .28* [.14, .57] .62* [.48, .82] .27* [.18, .40]
    Family History
    (yes = ref)		 1.05 [.89, 1.24] 1.21 [.96, 1.53] 1.37 [.62, 3.02] .97 [.69, 1.36] 1.16 [.72, 1.85]
χ2(2) = 76.78* χ2(2) = 70.05* χ2(2) = 14.00* χ2(2) = 12.08* χ2(2) = 43.16*
n = 4562 n = 4548 n = 4569 n = 4550 n = 4568

Notes.

*

p < .05.

OR = odds ratio. CI = 95% confidence interval. Ref = reference group. SES = socioeconomic status factor, higher factor scores indicate higher SES. Household Env = inferred household environment factor, higher factor scores indicate areas with many large family households (as opposed to non-family cohabitating) that do not speak English as their primary language. AA = African American. n = sample size for each analysis.

a

p = .046, but lower end of 95% CI = 1.003, so coefficient is not interpreted as significant.

Family History = family history of drug or alcohol problems.