Table 1. Description of included supermarkets and data in longitudinal analyses.
| Supermarket | Checkout food policy type | Intervention or comparator | 12-weekly market share (%), median [IQR] | Purchases of common checkout foods (1,000s of units/4 week), median [IQR] | ||
|---|---|---|---|---|---|---|
| Preimplementation | Post implementation | Preimplementation | Post implementation | |||
| 1 | Clear and consistent | Intervention | 3.0 [2.9–3.1] | 3.6 [3.5–3.6] | 4,003 [3,748–4,425] | 4,539 [3,585–5,151] |
| 2 | Clear and consistent | Intervention | 28.9 [28.8–29.1] | 28.4 [28.2–28.6] | 27,998 [25,438–29,364] | 28,336 [27,239–31,126] |
| 3 | Clear and consistent | Intervention | 4.8 [4.6–4.8] | 5.5 [5.4–5.6] | 4,778 [4,386–5,525] | 4,716 [4,364–5,151] |
| 4 | Vague or inconsistent | Intervention | 4.9 [4.8–5.0] | 5.1 [5.1–5.2] | 2,851 [2,274–3,363] | 3,247 [2,927–3,350] |
| 5 | Vague or inconsistent | Intervention | 3.1a | 3.1a | 2,306 [2,36–2,661] | 2,644 [2,343–2,800] |
| 6 | Vague or inconsistent | Intervention | 10.9 [10.8–11.0] | 10.6 [10.5–10.8] | 10,531 [9,690–11,561] | 10,678 [9,902–11,462] |
| 7 | Vague or inconsistent | Comparator | NA | 16.9 [16.2–17.2] | NA | 15,591.5 [13,288–16,656] |
| 8 | Vague or inconsistent | Comparator | NA | 16.5 [16.4–16.8] | NA | 12,241 [10,652–14,212] |
| 9 | Absent | Comparator | 6.2 [6.1–6.4] | NA | 10,221 [9,37–10,918] | NA |
aEstimated from 2017 annual reports.
Abbreviations: IQR, interquartile range; NA, not applicable.