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Table 3 Multilevel model estimating intervention effects on daily mean KCal per purchase

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

      95% CI
γ SE t p Lower Upper
Intercept 190.30 2.51 75.75 < .001 185.17 195.43
Group −2.57 3.55 −0.72 .474 −9.83 4.68
Pre-Post −1.84 0.52 −3.57 < .001 −2.85 −0.83
Group*Pre-Post 1.50 0.76 1.97 .049 0.01 2.99
Weekend 6.68 0.59 7.57 < .001 5.53 7.84
Purchases 0.02 0.00 6.62 < .001 0.01 0.02
  1. Note. Group: 0 = intervention; 1 = control. Pre-post: 0 = pre; 1 = post. Weekend: 0 = midweek; 1 = weekend; Purchases = number of purchases on day, centred at the grand mean