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. Author manuscript; available in PMC: 2015 Mar 18.
Published in final edited form as: Drug Alcohol Rev. 2014 Sep 6;34(2):211–220. doi: 10.1111/dar.12192

Table 1.

Demographic information and comparisons by latent class membership.

Latent Class Comparisons

Full Sample
(N = 404)
Dabblers
(n = 229)
Primary
Stimulant
(n = 90)
Primary
Downers
(n = 58)
Extensive
Regulars
(n = 27)

Demographic Characteristics n % n % n % n % n % Test Statistic
Race/Ethnicity χ2(3) = 2.50, ns
  White 270 66.8 159 69.4 60 66.7 35 60.3 16 59.3
  Non-White 134 33.2 70 30.6 30 33.3 23 39.7 11 40.7
Gender χ2(9) = 13.19, ns
  LGBQ Male 113 28.0 74 32.3 17 18.9 14 24.1 8 29.6
  Straight Male 108 26.7 52 22.7 28 31.1 21 36.2 7 25.9
  LGBQ Female 81 20.0 46 20.1 16 17.8 14 24.1 5 18.5
  Straight Female 102 25.2 57 24.9 29 32.2 9 15.5 7 25.9
Relationship Status χ2(3) = 1.19, ns
  Single 225 55.7 128 55.9 49 54.4 35 60.3 13 48.1
  Partnered 179 44.3 101 44.1 41 45.6 23 39.7 14 51.9
Education χ2(3) = 1.63, ns
  Less than 4-year degree 176 43.6 97 42.4 37 41.1 28 48.3 14 51.9
  4-year degree or higher 228 56.4 132 57.6 53 58.9 30 51.7 13 48.1
Parental Socioeconomic Status1 χ2(6) = 5.03, ns
  Poor or working class 92 22.9 48 21.1 25 28.1 14 24.1 5 18.5
  Middle class 157 39.2 98 43.2 29 32.6 21 36.3 9 33.3
  Upper middle class or rich 152 37.9 81 35.7 35 39.3 23 39.7 13 48.1
Current Income2 χ2(6) = 2.55, ns
  Less than $20k per year 194 49.4 111 49.8 39 44.3 329 51.8 15 57.7
  $20k to $39.9k per year 109 27.7 63 28.3 25 28.4 14 25.0 7 26.9
  $40k per year or more 90 22.9 49 22.0 24 27.3 13 23.2 4 15.4
Employment Status χ2(6) = 6.56, ns
  Unemployed 84 20.8 44 19.2 17 18.9 14 24.1 9 33.3
  Part-time employment 162 40.1 91 39.7 36 40.0 22 37.9 13 48.1
  Full-time employment 158 39.1 94 41.0 37 41.1 22 37.9 5 18.5
M SD M SD M SD M SD M SD Test Statistic

Age 24.6 2.7 24.5 2.8 24.7 2.6 24.6 2.7 25.0 1.9 F(3, 400) = 0.34, ns

Note.

1

Three participants did not report parental class background.

2

11 participants did not report current income.