Table 3.
Regression analyses for proportional pricing on size choice, kcals ordered and money spent for the three food outlets
| Estimate | Std. error | Sig. | Odds ratio | 95% CI Lower |
95% CI Upper | |||||
|---|---|---|---|---|---|---|---|---|---|---|
| Size choice 1 | ||||||||||
| Coffee shop beverage size | ||||||||||
| Pseudo R 2 | 0.067 | |||||||||
| Pricing condition (proportional) | -0.54 | 0.13 | < 0.001 | 0.58 | 0.45 | 0.75 | ||||
| Sandwich size | ||||||||||
| Pseudo R 2 | 0.156 | |||||||||
| Pricing condition (proportional) | -0.23 | 0.14 | 0.098 | 0.79 | 0.60 | 1.04 | ||||
| Fast food meal size | ||||||||||
| Pseudo R 2 | 0.124 | |||||||||
| Pricing condition (proportional) | -0.07 | 0.13 | 0.584 | 0.93 | 0.72 | 1.20 | ||||
| Kcals ordered 2 | ||||||||||
| Coffee shop | ||||||||||
| Adjusted R 2 | 0.097 | |||||||||
| Pricing condition (proportional) | -13.75 | 7.26 | 0.058 | -27.99 | 0.48 | |||||
| Sandwich shop | ||||||||||
| Adjusted R 2 | 0.119 | |||||||||
| Pricing condition (proportional) | -1.77 | 20.62 | 0.932 | -42.23 | 38.70 | |||||
| Fast food outlet | ||||||||||
| Adjusted R 2 | 0.178 | |||||||||
| Pricing condition (proportional) | 51.25 | 16.13 | 0.002 | 19.59 | 82.90 | |||||
| Money spent3 | ||||||||||
| Coffee shop spend | ||||||||||
| Adjusted R 2 | 0.082 | |||||||||
| Pricing condition (proportional) | 0.21 | 0.04 | < 0.001 | 0.13 | 0.29 | |||||
| Sandwich shop spend | ||||||||||
| Adjusted R 2 | 0.112 | |||||||||
| Pricing condition (proportional) | 0.78 | 0.19 | < 0.001 | 0.41 | 1.16 | |||||
| Fast food outlet spend | ||||||||||
| Adjusted R 2 | 0.138 | |||||||||
| Pricing condition (proportional) | 0.57 | 0.07 | < 0.001 | 0.43 | 0.70 | |||||
1Estimates indicate the average change in the log odds of the response variable associated with a one unit increase in each predictor variable, 2 Estimates are in kcals, 3 Estimates in pound sterling