Table 3.
Summary of mediation and moderation effects (n = 563)
| Mediation pathway | bp | β | SE | 95% CI |
|---|---|---|---|---|
| a path: HSMU→OAT | 0.155* | 0.039* | 0.073 | [0.011, 0.298] |
| b path: OAT → ECU | 0.087* | 0.261* | 0.040 | [0.009, 0.165] |
| a*b path: HSMU→ OAT →ECU | 0.023** | 0.017** | 0.013 | [0.001, 0.051] |
| d path: HSMU →ECU | 0.183** | 0.137** | 0.068 | [-0.049, 0.316] |
| Moderation pathway | ||||
| OATxHPE →b path | − 0.467** | − 0.350** | 0.175 | [-0.811, − 0.123] |
*p < .05; **p < .01; ***p < .001
bp: percentage coefficients; β: Standardized beta; SE stands for standard error; CI stands for confidence interval
HSMU: health-related social media use; OAT: online anti-tobacco messages exposure; ECU: e-cigarette use; HPE: harm perception of e-cigarettes
All model controlling for age, gender, race/ethnicity, marital status, education; a path controlling for ECU