Method

Mean difference from Full Visual Method (kJ)

p-value (Mean difference from Full Visual Method)

Time per image (s)

Full Visual Method

157 ± 48

Exchange

1.8 ± 0.50

0.0013

104 ± 36*

Food Score Long

2.5 ± 0.56

0.0002

117 ± 49*

Food Score Short

2.2 ± 0.85

0.0134

116 ± 48*

Meal

1.6 ± 0.46

0.0019

68 ± 25*