Table 1.
Summary of study measures
| Measures | Baseline | Post intervention | Follow-up |
|---|---|---|---|
|
Primary and secondary outcomes | |||
|
Store level | |||
| Combined fruit and vegetable purchasing (grams/person/day) |
✓ |
✓ |
✓ |
| Water, diet soft-drink, fruit and vegetable purchasing (grams/person/day) |
✓ |
✓ |
✓ |
| Percent total sugars (grams) to total energy (kJ) purchased |
✓ |
✓ |
✓ |
| Sodium (mg) per 1000 kJ of total energy purchased |
✓ |
✓ |
✓ |
| Proportion of total sugar-sweetened soft drinks purchased (grams) to total fruit and vegetables purchased |
✓ |
✓ |
✓ |
| Proportion of healthy food to unhealthy food purchased |
✓ |
✓ |
✓ |
|
Other outcomes to measure impact on total diet |
|
|
|
| Totals of each of dietary energy (kJ), sodium (mg) and sales ($) and sub-totals for each of 20+ food groupings |
✓ |
✓ |
✓ |
| Proportions per 1000 kJ of energy for each of fruit and vegetables (grams), sugar sweetened soft drinks (grams), healthy foods (grams) and unhealthy foods (grams) |
✓ |
✓ |
✓ |
| Proportion of healthy foods to total foods, unhealthy food to total foods and diet soft-drinks and water to total beverages, using a total energy (kJ), sales ($) and weight (grams) |
✓ |
✓ |
✓ |
|
Mediation sub-study outcomes | |||
| Fruit consumption |
✓ |
✓ |
✓ |
| Vegetable consumption |
✓ |
✓ |
✓ |
| Water consumption |
✓ |
✓ |
✓ |
| Diet and sugar sweetened soft-drink consumption |
✓ |
✓ |
✓ |
|
Process evaluation | |||
|
Contextual factors |
|
|
|
| Population movement |
✓ |
✓ |
✓ |
| Positioning of food and beverage products in-store |
✓ |
✓ |
✓ |
| Price and price ticketing practice |
✓ |
✓ |
✓ |
| Range of food and beverages available for purchase |
✓ |
✓ |
✓ |
| Provisioning of food and beverages to other services/organisations |
✓ |
✓ |
✓ |
| Community income |
✓ |
✓ |
✓ |
| Store policy |
✓ |
✓ |
✓ |
| Product promotion |
✓ |
✓ |
✓ |
| Store infrastructure |
✓ |
✓ |
✓ |
| Delivery of food and beverages |
✓ |
✓ |
✓ |
| Store management and staffing/ community social issues |
✓ |
✓ |
✓ |
|
Mediation sub-study |
|
|
|
| Outcome expectations of perceived affordability of fruit and vegetables |
✓ |
✓ |
✓ |
| Outcome expectations of perceived benefits of fruit and vegetables |
✓ |
✓ |
✓ |
| Self-efficacy for increasing fruit and vegetable consumption |
✓ |
✓ |
✓ |
| Self-efficacy for drinking water and reducing sugar sweetened soft drink consumption |
✓ |
✓ |
✓ |
| Food security |
✓ |
✓ |
✓ |
| Personal preferences |
✓ |
✓ |
✓ |
| Barriers to consuming more fruit and vegetables |
✓ |
✓ |
✓ |
|
Intervention fidelity | |||
| Intervention fidelity |
|
✓ |
|
| Dose and reach of nutrition education strategy activities |
|
✓ |
|
| Perceived barriers and enablers to intervention implementation (price discount and combined strategy) | ✓ | ||