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Table 3 Estimated marginal means (SE) for vegetable and meat/fish consumption in grams for all three locations

From: Menu-engineering in restaurants - adapting portion sizes on plates to enhance vegetable consumption: a real-life experiment

  Vegetable consumption in grams (plate) Vegetable consumption in grams (total, incl. side dishes) Meat/fish consumption in grams
Period    
Control (n = 530) 61.7 (1.65)a 137.0 (2.65)a 211.1 (2.29)a
Intervention (n = 469) 115.5 (1.82)b 178.0 (2.92)b 183.1 (2.52)b
Location    
Restaurant 1 (n = 129) 90.0 (2.89)a 166.2 (4.63)a 203.7 (4.01)a
Restaurant 2 (n = 324) 87.3 (1.81)a 159.3 (2.90)a 197.1 (2.51)b
Restaurant 3 (n = 546) 88.5 (1.40)a 147.0 (2.24)b 190.6 (1.94)b
Main effect intervention F
(df1,df2)
Partial η 2
478.92***
(1, 993)
.325
108.2***
(1, 993)
.098
67.75***
(1, 993)
.064
Main effect location F
(df1,df2)
Partial η 2
.35
(2, 993)
.001
9.97***
(2, 993)
.020
5.23**
(2, 993)
.010
Main effects intervention*location F
(df1,df2)
Partial η 2
7.55**
(2, 993)
.015
2.87
(2, 993)
.006
9.31***
(2, 993)
.018
  1. Reported means are amount in grams (standard errors are reported in brackets); Means with a different superscript a, b indicate a significant difference (p < .05) (means are compared two at a time); *** p < .001; **p < .01; *p < .05