Adjusted ORs (95% CIs) of the association between year and support for, and perceived effectiveness of, the Soft Drinks Industry Levy (SDIL); International Food Policy Study, 2017–2019
| Concept | Question wording (where applicable) | Response category | Support for the SDIL | Perceived effectiveness of the SDIL | ||
| Unadjusted | Adjusted | Unadjusted | Adjusted | |||
| Survey wave | Not applicable | 2017 | Reference | Reference | Reference | Reference |
| 2018 | 0.84 (0.75 to 0.95) | 0.93 (0.81 to 1.05) | 0.77 (0.68 to 0.87) | 0.78 (0.69 to 0.88) | ||
| 2019 | 0.84 (0.74 to 0.96) | 0.90 (0.78 to 1.03) | 0.76 (0.67 to 0.87) | 0.76 (0.66 to 0.86) | ||
| Age | How old are you? | 18–24 | Reference | Reference | ||
| 25–34 | 1.07 (0.89 to 1.28) | 0.75 (0.61 to 0.91) | ||||
| 35–44 | 1.28 (1.06 to 1.55) | 0.50 (0.41 to 0.62) | ||||
| 45–54 | 1.57 (1.30 to 1.90) | 0.46 (0.37 to 0.56) | ||||
| 55–64 | 1.81 (1.50 to 2.19) | 0.47 (0.39 to 0.58) | ||||
| Sex | What sex were you assigned at birth, meaning on your original birth certificate? | Female | Reference | Reference | ||
| Male | 1.01 (0.92 to 1.13) | 1.05 (0.95 to 1.16) | ||||
| Education | What is the highest level of education you have completed? | School level | Reference | Reference | ||
| Postschool level | 1.19 (1.07 to 1.32) | 1.02 (0.92 to 1.13) | ||||
| Income sufficiency | How easy is it to make ends meet? | Not easy | Reference | Reference | ||
| Easy | 1.07 (0.96 to 1.20) | 1.02 (0.92 to 1.14) | ||||
| Dependent children | Do you have any children (including stepchildren or adopted children) under 18? | No | Reference | Reference | ||
| Yes | 0.82 (0.73 to 0.92) | 1.21 (1.07 to 1.36) | ||||
| SSB consumption | Consumed regular fizzy drinks, sweetened fruit drinks, sports drinks, energy drinks in last week | Consumers | Reference | Reference | ||
| Non-consumers | 1.12 (1.01 to 1.25) | 1.01 (0.91 to 1.12) | ||||
| Social norms | People important to me try not to drink sugary drinks | Not agree | Reference | Reference | ||
| Agree | 1.35 (1.21 to 1.50) | 1.35 (1.21 to 1.50) | ||||
| Attitudes | Sugary drinks taste good | Agree | Reference | Reference | ||
| Not agree | 1.32 (1.21 to 1.50) | 1.33 (1.19 to 1.48) | ||||
| Knowledge | Frequently drinking sugary drinks increases the risk of obesity | Not true | Reference | Reference | ||
| True | 2.78 (2.37 to 3.27) | 1.26 (1.07 to 1.48) | ||||
| Expert trust | I trust messages from health experts on sugary drinks | Not agree | Reference | Reference | ||
| Agree | 2.36 (2.09 to 2.66) | 1.96 (1.75 to 2.19) | ||||
| Industry trust | I trust messages from the food and beverage industry on sugary drinks | Not agree | Reference | Reference | ||
| Agree | 0.72 (0.63 to 0.82) | 1.53 (1.34 to 1.74) | ||||
Bold indicates statistically significant at the p<0.05 level; adjusted for all concepts listed.
SSB, sugar-sweetened beverage.