Table 1.
Number of swaps offered, potential basket energy density, number of swaps accepted and bought basket energy density by participant group
| Group | Planned contrast effect sizes (95 % CI) | |||||||
|---|---|---|---|---|---|---|---|---|
| Control (n = 159) | Consent-checkout (n = 137) | Consent-selection (n = 131) | Imposed-checkout (n = 141) | Imposed-selection (n = 152) | Intervention vs Control | Consent vs Imposed | Selection vs Checkout | |
| N Swaps offered | - | 4.17 | 3.96 | 4.01 | 4.17 | - | −0.003 (−0.04 – 0.03) | −0.003 (−0.04 – 0.03) |
| Potential basket ED (kJ/100 g) | 1037.6 | 969.6 | 962.9 | 939.1 | 947.1 | −82.9*** (−110.1 – -55.8) | 23.1 (−2.4 – 48.7) | 0.6 (−24.9 – 26.2) |
| N swaps accepted (median, OR) | - | 0 (0–1) | 1 (0–2) | 0 (0–1) | 1 (0–2) | - | 0.977 (0.88 – 1.08) | 1.224 (1.11 – 1.35) |
| Bought basket ED (kJ/100 g) | 1037.6 | 1026.5 | 1023.3 | 997.0 | 1007.2 | −24.1 (4.04 – -52.23) | 22.8 (−3.69 – 49.26) | 3.53 (−22.94 – 20.01) |
***: p < 0.001