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. Author manuscript; available in PMC: 2018 Apr 23.
Published in final edited form as: Prev Sci. 2016 Feb;17(2):248–258. doi: 10.1007/s11121-015-0614-3

Table 1.

Sample Characteristics, Pretest Equivalence, and Posttest Differences by Experimental Condition

Measures Total a Control b Treatment c t-value P Cohen’s d
Demographic characteristics (pretest)
  Economic hardship 10.41 (2.89) 10.12 (2.88) 10.67 (2.88) 2.05 0.04 --
  SES −0.13 (8.43) −0.05 (0.82) 0.02 (0.86) 0.98 0.33 --
  Single-parent family structure 0.62 (0.49) 0.62 (0.49) 0.62 (0.49) −0.17 0.87 --
  Unemployment 0.61 (0.49) 0.64 (0.48) 0.57 (0.50) −0.27 0.79
  Living below poverty level 0.77 (0.42) 0.77 (0.42) 0.76 (0.43) −1.48 0.14

Measures of risk behavior vulnerability
  Tolerance of deviance
    Pretest 18.67 (5.01) 19.11 (6.30) 18.26 (3.39) −1.80 0.07 --
    Posttest 18.92 (5.60) 19.83 (7.10) 18.05 (3.48) −3.21 0.01 0.32
  Risk behavior intentions
    Pretest 14.43 (3.63) 14.59 (4.01) 14.30 (3.25) −0.86 0.39 --
    Posttest 14.80 (4.15) 15.19 (4.83) 14.42 (3.34) −1.89 0.06 0.19
  Peer behavior
    Pretest 0.04 (6.66) 0.46 (6.96) −0.35 (6.36) −1.31 0.19 --
    Posttest −0.19 (6.46) 0.39 (7.12) −.73 (5.71) −1.77 0.08 0.17

Mediators
  Self-regulation index
    Pretest 0.00 (2.17) −0.02 (2.21) 0.02 (2.14) 0.21 0.84 --
    Posttest 0.00 (2.17) −0.30 (2.34) 0.28 (1.95) 2.75 0.01 0.27
  Parenting index
    Pretest 0.00 (3.07) 0.05 (3.04) −0.04 (3.11) −0.31 0.75 --
    Posttest 0.01 (2.96) −0.32(3.24) 0.28 (2.63) 2.08 0.04 0.20
a

N = 465.

b

n = 223.

c

n = 242.