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. Author manuscript; available in PMC: 2019 Jan 24.
Published in final edited form as: Subst Abus. 2018 Mar 13;39(3):275–279. doi: 10.1080/08897077.2018.1437862

Table 1.

The Impact of smokeSCREEN on Knowledge, Self-efficacy, and Perceived Norms.

Variable Baseline Post Gameplay 2 weeks Follow-Up 12 weeks
M (SD) M (SD) M (SD)
Cigarette Knowledge 4.16 (2.53) 5.48 (2.40) 4.88 (2.09)
Marijuana Knowledge 4.12 (2.40) 5.48 (2.38) 5.16 (2.30)
Cigarette Self-Efficacy 2.98 (1.18) 3.40 (.87) 3.44 (.96)
Marijuana Self-Efficacy 3.22 (1.08) 3.58 (.67) 3.44 (.95)
Cigarette Intentions 1.51 (1.21) 1.07 (.15) 1.10 (.24)
Marijuana Intentions 1.75 (1.45) 1.12 (.29) 1.05 (.14)
Cigarette Attitudes 1.36 (.59) 1.37 (.47) 1.38 (.68)
Marijuana Attitudes 1.42 (.77) 1.24 (.37) 1.33 (.54)
Cigarette Perceived Norms 1.81 (.69) 1.70 (.63) 1.67 (.67)
Marijuana Perceived Norms 1.50 (.56) 1.59 (.67) 1.50 (.56)

Note. Knowledge items represent a sum of correct responses in which the maximum value is 9.0. Self-efficacy scores represent a mean of 2 items with values ranging from 1 to 4 and higher values indicating higher levels of self-efficacy. Intention scores represent a mean of 3 items with values ranging from 1 to 5 and higher values indicating greater intentions to use the substance (i.e., lower values represent healthier intentions). Attitude scores represent a mean of 5 items with scores ranging from 1 to 5 and lower scores representing healthier attitudes. Perceived norms scores represent a mean of six items with values ranging from 1 to 4 and lower scores representing healthier perceived norms.