Table 5.
Moderated regression analysis examining the interaction effects between intervention group, perceived descriptive norm related to SSB consumption (PDNS) and perceived injunctive norm related to SSB consumption (PINS) on the behavioral intention to consume less sugar-sweetened beverage (SSB) over time 1.
| Behavioral Intention to Consume Less SSB T2 (n = 346) | ||||||
|---|---|---|---|---|---|---|
| Variable | β | SE β | t | p | 95% CI | |
| Lower | Upper | |||||
| Constant | 1.91 | 0.51 | 3.74 | 0.00 | 0.91 | 2.91 |
| Intervention (predictor) | 0.30 | 0.08 | 3.93 | 0.00 | 0.15 | 0.46 |
| PDNS T1 (moderator) | 0.00 | 0.05 | 0.02 | 0.98 | −0.10 | 0.10 |
| PINS T1 (moderator) | 0.11 | 0.05 | 2.16 | 0.03 | 0.01 | 0.20 |
| Intervention X PDNS (interaction term) | −0.11 | 0.11 | −1.04 | 0.30 | −0.33 | 0.10 |
| Intervention X PINS (interaction term) | 0.14 | 0.10 | 1.46 | 0.14 | −0.05 | 0.33 |
| Behavioral intention to consume less SSB T1 (covariate) | 0.46 | 0.06 | 7.66 | 0.00 | 0.35 | 0.58 |
| Thirst T1 (covariate) | −0.01 | 0.01 | −0.73 | 0.47 | −0.03 | 0.01 |
| Thirst T2 (covariate) | 0.02 | 0.01 | 2.37 | 0.02 | 0.00 | 0.04 |
| Sex (covariate) | 0.19 | 0.08 | 2.44 | 0.02 | 0.04 | 0.34 |
| Age (covariate) | −0.07 | 0.04 | −1.68 | 0.09 | −0.14 | 0.01 |
| Overall model: F(10, 335) = 14.02, p = 0.00, R2 = 0.32 | ||||||
1 T1 = pre-intervention and T2 = post-intervention.