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Baseline characteristics of the participants
| Characteristic | Intervention group (n=114) | Control group (n=110) | Test statistic | P value | Standardized difference |
| Age (years), mean (SD) | 20.4 (1.2) | 20.6 (1.1) | –1.33 (222)a |
.20 | –0.17b |
| Sex (male/female) | 54/60 | 50/60 | 0.10 (1)c | .75 | 0.02d |
| Prior toxicology GPAe, mean (SD) | 78.41 (4.65) | 78.55 (8.24) | –0.15 (222)a | .88 | –0.02 |
at test (df) value.
bStandardized mean difference.
cChi-square (df) values.
dCramér V.
eGPA: grade point average.
