Table 4.
Purchase of fresh fruits and vegetables (F/V) by store customers who participated in exit interviews in Chelsea, MA, USA, June 2013–April 2014
| Baseline (Jun–Oct 2013) | Intervention period (Dec 2013–Apr 2014) | Difference | P value† for difference in differences | |
|---|---|---|---|---|
| All survey participants (n 575)‡ | ||||
| Purchased fresh F/V (%) | ||||
| Control stores | 36 | 32 | −4 | 0·29 |
| Intervention stores | 15 | 16 | 1 | |
| Planned to purchase F/V (%) | ||||
| Control stores | 38 | 32 | −6 | 0·11 |
| Intervention stores | 20 | 20 | 0 | |
| Survey participants on WIC (n 134)§ | ||||
| Purchased fresh F/V (%) | ||||
| Control stores | 41 | 39 | −2 | 0·11 |
| Intervention stores | 18 | 36 | 18 | |
| Planned to purchase F/V (%) | ||||
| Control stores | 45 | 39 | −6 | 0·17 |
| Intervention stores | 22 | 37 | 15 | |
| Survey participants on SNAP (n 212)|| | ||||
| Purchased fresh F/V (%) | ||||
| Control stores | 41 | 26 | −15 | 0·007 |
| Intervention stores | 16 | 22 | 6 | |
| Planned to purchase F/V (%) | ||||
| Control stores | 46 | 31 | −15 | <0·001 |
| Intervention stores | 21 | 24 | 3 | |
WIC, Special Supplemental Nutrition Program for Women, Infants, and Children; SNAP, Supplemental Nutrition Assistance Program.
P value adjusted for quintile of propensity score, whether the respondent was shopping primarily for food at that particular visit and for clustering at the store level.
No. of participants: control stores, n 141 during baseline and n 139 during the intervention period; intervention stores, n 145 during baseline and n 150 during the intervention period.
No. of participants: control stores, n 32 during baseline and n 38 during the intervention period; intervention stores, n 36 during baseline and n 28 during the intervention period.
No. of participants: control stores, n 51 during baseline and n 54 during the intervention period; intervention stores, n 57 during baseline and n 50 during the intervention period.