Table 4.
Food Purchasing and Fruit and Vegetable Consumption by Time and Intervention Status
| Intervention | Comparison | Mean Difference (Follow-up – Baseline) | ||||
|---|---|---|---|---|---|---|
| Mean (SD) | Mean (SD) | |||||
| Baseline | Follow-up | Baseline | Follow-up | Intervention | Comparison | |
| (N = 313) | (N = 323) | (N = 482) | (N = 568) | |||
| Dollars spent on food per weeka | 131.6 (64.0) | 140.6 (126.0) | 123.1 (66.4) | 134.8 (74.8)** | 9.0 | 11.7 |
| Dollars spent on fruits and vegetables per weeka | 46.2 (28.4) | 49.8 (33.9) | 44.6 (29.7) | 47.2 (32.6) | 3.6 | 2.6 |
| Percent of dollars spent on fruits and vegetables | 36.5 (16.7) | 38.1 (17.6) | 37.7 (18.0) | 36.9 (18.7) | 1.6 | −0.8 |
| Servings of fruits and vegetables consumed each day | 4.4 (2.0) | 4.2 (2.1) | 4.5 (2.4) | 4.8 (2.3) | −0.2 | 0.3 |
NOTES: Significant differences in continuous variables were tested between intervention baseline and follow-up using independent sample t-tests, comparison baseline and follow-up using independent sample t-tests tests, and mean difference (follow-up – baseline) for intervention and comparison using a F-test on the interaction term of a linear regression (more details can be seen in Additional file 3: Table S3)
**p < 0.01
aThe significance of the mean difference was not tested, as this variable was only of interest to calculate percent of dollars spent on fruits and vegetables