Table 1.

Analysis of variance for group, food and portion-type.

	DF	Mean square	Error DF	F Value	P Value
Group	1	1,179,553	30	8.41	0.007
Food	3	1,204,970	93	25.38	<0.000
Group*Food	3	93,979	93	1.98	0.123
Portion-Type	2	421,195	60	38.80	<0.000
Group*Portion-Type	2	59,430	60	5.47	0.007
Portion-Type*Food	6	22,851	435	3.54	0.002
Group*Portion-Type*Food	6	16,290	435	2.52	0.021
ID(Group)	30	139,831	102	2.72	<0.000
ID(Group*Portion-Type)	60	10,849	435	1.68	0.002
ID(Group*Food)	90	52,070	435	8.06	<0.000
Residual	435	64,621