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Table 7 Multilevel model estimating intervention effects on daily mean price per purchase (pence)

From: Prompting consumers to make healthier food choices in hospitals: a cluster randomised controlled trial

      95% CI
γ SE t p Lower Upper
Intercept 78.37 0.93 84.21 < .001 76.47 80.27
Group −0.67 1.32 −0.51 .617 −3.35 2.02
Pre-Post −0.89 0.22 −4.06 <.001 −1.32 −0.46
Group*Pre-Post 0.71 0.32 2.21 .027 0.08 1.35
Weekend 2.16 0.23 9.31 < .001 1.71 2.62
Total Purchases 0.00 0.00 2.06 .039 0.00 0.00
  1. Note. Group: 0 = intervention; 1 = control. Pre-post: 0 = pre; 1 = post. Weekend: 0 = midweek; 1 = weekend; Total Purchases = number of purchases on day, centred at the grand mean