Table 2 Change in DASH score in control, Strategy 1 and Strategy 2 groups

From: Efficacy of supermarket and web-based interventions for improving dietary quality: a randomized, controlled trial

DASH score

Control (n = 46) mean (95% CI)

Strategy 1 (n = 100) mean (95% CI)

Strategy 2 (n = 101) mean (95% CI)

Strategies 1 and 2 (n = 201) mean (95% CI)

At baseline

45.2 (42.0, 48.4)

44.4 (42.0, 46.8)

43.2 (40.8, 45.5)

43.8 (41.9, 45.7)

At 3 months

51.0 (47.6, 54.4)

53.1 (50.6, 55.5)

55.6 (53.2, 58.1)

54.3 (52.4, 56.3)

At 6 months

49.6 (46.3, 52.8)

51.0 (48.6, 53.5)

51.6 (49.2, 54.0)

51.3 (49.4, 53.2)

Change (baseline to 3 months)

5.8 (2.5, 9.2)

8.6 (6.4, 10.8)

12.4 (10.3, 14.6)

10.5 (9.0, 12.1)

Change (baseline to 6 months)

4.4 (0.6, 8.1)

6.6 (4.0, 9.2)

8.4 (5.9, 11.0)

7.5 (5.7, 9.3)

  1. Strategy 1: in-store education only; Strategy 2: in-store education plus online training and tools. A mixed model for repeated measures was used to model each outcome, controlling for age group, sex, household size, race, income and baseline body mass index. Contrasts (with two-sided t-tests) were used to estimate differences between treatment groups for 3- and 6-month changes from baseline. Intervention effect is mean change in outcome and 95% CI. No adjustments for multiple comparison were made. These criteria apply also to Tables 3 and 4.
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