Outcome (first block of estimates) | Preimplementation time trend | During implementation time trend | Postimplementation time trend | ||||||
β | (95% CI) | P value | β | (95% CI) | P value | β | (95% CI) | P value | |
Volume ‘red’ drinks (%) | −0.06 | (−0.11 to −0.02) | 0.008 | −0.41 | (−0.68 to −0.14) | 0.003 | −0.10 | (−0.19 to −0.02) | 0.016 |
Refrigerated drinks revenue (AU$)† | −0.03 | (−0.49 to 0.43) | 0.887 | −3.52 | (−7.98 to 0.95) | 0.122 | −1.32 | (−2.62 to −0.02) | 0.046 |
Volume ‘amber’ drinks (%) | 0.01 | (−0.04 to 0.06) | 0.659 | −0.04 | (−0.16 to 0.09) | 0.547 | 0.12 | (0.07 to 0.17) | <0.001 |
Volume ‘green’ drinks (%) | 0.05 | (0.02 to 0.08) | 0.001 | 0.39 | (0.15 to 0.63) | 0.001 | −0.02 | (−0.08 to 0.04) | 0.511 |
Total volume of drinks sold (L)† | 0.09 | (−0.25 to 0.07) | 0.261 | −0.51 | (−1.18 to 0.15) | 0.129 | −0.21 | (−0.39 to −0.03) | 0.024 |
Volume water (%) | 0.04 | (0.02 to 0.07) | <0.001 | 0.21 | (0.02 to 0.40) | 0.034 | −0.02 | (−0.07 to 0.03) | 0.395 |
Free sugar content (g/100 mL) | −0.003 | (−0.007 to 0.001) | 0.156 | −0.02 | (−0.04 to −0.004) | 0.018 | −0.007 | (−0.01 to −0.001) | 0.034 |
Revenue food and other drinks (AU$)† | 1.74 | (−0.56 to 4.03) | 0.138 | −13.3 | (−31.9 to 5.36) | 0.163 | −2.66 | (−6.20 to 0.88) | 0.141 |
Outcome (second block of estimates) | Change in time trend from preimplementation to during implementation | Change in time trend from preimplementation to postimplementation | Change in time trend from during implementation to postimplementation | ||||||
β | (95% CI) | P value | β | (95% CI) | P value | β | (95% CI) | P value | |
Volume ‘red’ drinks (%) | −0.35 | (−0.62 to −0.08) | 0.011 | −0.04 | (−0.14 to 0.06) | 0.437 | 0.31 | (0.02 to 0.59) | 0.036 |
Refrigerated drinks revenue (AU$)† | −3.48 | (−8.06 to 1.09) | 0.136 | −1.29 | (−2.78 to 0.21) | 0.091 | 2.2 | (−1.10 to 5.49) | 0.191 |
Volume ‘amber’ drinks (%) | −0.05 | (−0.20 to 0.10) | 0.510 | 0.11 | (0.04 to 0.18) | 0.004 | 0.16 | (0.05 to 0.27) | 0.004 |
Volume ‘green’ drinks (%) | 0.34 | (0.11 to 0.57) | 0.004 | −0.07 | (−0.16 to 0.01) | 0.101 | −0.41 | (−0.68 to −0.14) | 0.003 |
Total volume of drinks sold (L)† | −0.42 | (−0.97 to 0.12) | 0.130 | −0.12 | (−0.25 to 0.01) | 0.074 | 0.31 | (−0.20 to 0.81) | 0.236 |
Volume water (%) | 0.16 | (−0.03 to 0.35) | 0.091 | −0.07 | (−0.13, −0.003) | 0.039 | −0.23 | (−0.43 to −0.02) | 0.030 |
Free sugar content (g/100 mL) | −0.02 | (−0.04 to −0.001) | 0.041 | −0.004 | (−0.01 to 0.005) | 0.370 | 0.01 | (−0.005 to 0.03) | 0.141 |
Revenue food and other drinks (AU$)† | −15 | (−35.7 to 5.65) | 0.154 | −4.4 | (−10.0 to 1.20) | 0.123 | 10.6 | (−4.85 to 26.1) | 0.179 |
Outcome (third block of estimates) | Change in level at start of implementation‡ | Change in level at end of implementation‡ | Change in outcome February 2020‡ | ||||||
β | (95% CI) | P value | β | (95% CI) | P value | β | (95% CI) | P value | |
Volume ‘red’ drinks (%) | 0.16 | (−2.22 to 2.53) | 0.897 | −8.19 | (−17.3 to 0.91) | 0.078 | −11.0 | (−21.6 to −0.41) | 0.042 |
Refrigerated drinks revenue (AU$)† | 23.8 | (−54.3 to 102) | 0.551 | 22.0 | (−78.7 to 123) | 0.668 | −68.1 | (−165 to 28.7) | 0.168 |
Volume ‘amber’ drinks (%) | −0.45 | (−3.71 to 2.82) | 0.789 | −2.93 | (−7.47 to 1.62) | 0.207 | 4.71 | (−3.21 to 12.6) | 0.244 |
Volume ‘green’ drinks (%) | 0.7 | (−1.89 to 3.29) | 0.596 | 11.6 | (5.08 to 18.0) | <0.001 | 6.43 | (−0.68 to 13.5) | 0.076 |
Total volume of drinks sold (L)† | 5.36 | (−8.91 to 19.6) | 0.462 | 7.10 | (−10.4 to 24.6) | 0.427 | −1.22 | (−21.7 to 19.2) | 0.907 |
Volume water (%) | 0.87 | (−1.12 to 2.87) | 0.391 | 7.07 | (2.00 to 12.1) | 0.006 | 2.5 | (−3.74 to 8.74) | 0.433 |
Free sugar content (g/100mL) | 0.06 | (−0.14 to 0.27) | 0.544 | −0.49 | (−1.06 to 0.07) | 0.087 | −0.78 | (−1.55 to −0.001) | 0.050 |
Revenue food and other drinks (AU$)† | 172 | (−228 to 571) | 0.400 | 232 | (−347 to 811) | 0.432 | −75.9 | (−439 to 288) | 0.682 |
Study periods: Preimplementation (4 January 2016 to 4 March 2018 ; Implementation (5 March 2018 to 30 September 2018); Postimplementation (1 October 2018 to 24 February 2020).
*Estimates obtained under a model using weekly data, adjusting for calendar month and maximum weekly temperature.
†Models for total outcomes additionally adjusted for facility type (café; kiosk; canteen).
‡Difference in level compared with the counterfactual outcome.