Table 1.
Characteristics of participating restaurants
| Weekly business days | Type | Characteristics of vegetable-rich meals | |||
|---|---|---|---|---|---|
| Number of meals offered | Single dish or comboa | Price (Japanese yen) | |||
| A | 5 | Casual/family | 1 | Combo | 950 |
| B | 6 | Casual/family | 1 | Combo | 1029 |
| C | 7 | Izakaya pub | 1 | Single dish | 680 |
| D | 6 | Chinese | 1 | Combo | 800 |
| E | 6 | Italian | 1 | Combo | 1000 |
| F | 4 | Italian | 4 | Combo | 880, 1080, 1280, 1450 |
| G | 5 | Cafe | 1 | Combo | 900 |
| H | 6 | Udon noodle | 1 | Combo | 830 |
| I | 7 | Izakaya pub | 3 |
Single dish, Combo |
680 720, 780 |
| J | 6 | Italian | 1 | Combo | 880 |
| K | 5 | Cafe | 2 | Combo | 880 |
| L | 5 | Casual/family | 1 | Combo | 900 |
| M | 6 | Western | 2 | Single dish | 480, 560 |
| N | 7 | Italian | 1 | Combo | 930 |
| O | 6 | Japanese | 1 | Single dish | 600 |
| P | 6 | Izakaya pub | 1 | Single dish | 880 |
| Q | 7 | Ramen noodle | 1 | Combo | 850 |
| R | 6 | Ramen noodle | 2 | Combo | 950 |
| S | 6 | Italian | 5 | Single dish | 324, 432, 540, 756, 972 |
| T | 6 | Chinese | 3 | Single dish | 600, 1000, 1000 |
| U | 7 | Izakaya pub | 1 | Single dish | 680 |
| V | 6 | Cafe | 1 | Combo | 1300 |
| W | 6 | Cafe | 1 | Combo | 850 |
| X | 6 | Casual/family | 4 | Combo | 780, 780, 800, 880 |
| Y | 6 | Chinese | 2 |
Single dish, Combo |
700 650 |
| Zb | 7 | Izakaya pub | 1 | Single dish | 650 |
The number of orders, visitors and total sales per day in each restaurant are shown in Additional file 1: Supplementary Material 3
aSingle dish salad-type meal or combo-type meal
bDropped out