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. 2023 Jul 4;7:e44400. doi: 10.2196/44400

Table 2.

Changes in knowledge (N=20).

Variable Scores Pre-post comparison P value

Baseline assessment, mean (SD) Postintervention assessment, mean (SD) Within-group Cohen d t test (df)
Percentage of correct responses to 2-item cognitive restructuring quiz 0.40 (0.35) 0.82 (0.38) 0.85 3.53 (18) .002
Perceived short-term helpfulness of using alcohol to copea 2.60 (1.79) 1.78 (1.17) −0.53 −2.29 (17) .04
Perceived long-term helpfulness of using alcohol to copea 1.80 (1.24) 1.17 (0.51) −0.61 −2.26 (17) .04

aScale ranging from 1=very hurtful to 7=very helpful.