Analysis | Variable | Coefficients (95% CIs)a | Percentage change (%) (95% CIs) a | pa | Change in energy purchased (kcal)b | Mean number of transactions (s.d.)b | Change in energy purchased (kcal) per transactionb | |
---|---|---|---|---|---|---|---|---|
Overall | Portion size intervention period | −0.093 (− 0.182, − 0.004) | −8.92 (− 16.68, − 0.44) | 0.081 | −10,208 | 537 (342) | −19.0 | |
By site | Portion size intervention period | Site 1 | −0.116 (− 0.271, 0.039) | − 10.94 (− 23.74, 4.01) | 0.188 | −12,541 | 460 (80) | −27.3 |
Site 2 | −0.052 (− 0.194, 0.090) | −5.05 (− 17.61, 9.44) | 0.499 | − 11,738 | 877 (129) | − 13.4 | ||
Site 3 | −0.003 (− 0.141, 0.134) | −0.32 (− 13.13, 14.38) | 0.965 | −2010 | 340 (28) | − 5.9 | ||
Site 4 | −0.074 (− 0.212, 0.064) | −7.13 (− 19.07, 6.56) | 0.328 | −15,575 | 1054 (233) | −14.8 | ||
Site 5 | −0.150 (− 0.288, − 0.012) | −13.96 (− 25.04, − 1.24) | 0.071 | − 10,034 | 338 (25) | −29.7 | ||
Site 6 | −0.170 (− 0.311, − 0.029) | −15.63 (− 26.74, − 2.84) | 0.051 | − 4468 | 147 (45) | −30.4 |