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. 2020 Sep 9;15(9):e0238050. doi: 10.1371/journal.pone.0238050

Table 4. Regression model results among items not saved for later.

(A) (B) (C) (D)
VARIABLES OLS of Food Waste Rate for this item LPM = 1 if any remains uneaten OLS Kcals of the item selected OLS Kcals consumed of the item
This food item is a leftover 0.047 0.096* -12.428 -16.115
from previous meals? (yes,
= 1; no, = 0)
(0.028) (0.052) (13.265) (13.280)
# of food items in this meal -0.008** -0.019** 0.388 6.222*
that are leftovers from a previous meal (0.004) (0.007) (3.296) (3.013)
# of food items in this meal -0.030* -0.056 -- -8.810
that are saved to become a leftover (0.017) (0.044) (5.755)
# of food items selected -0.002 -0.012** -10.133** -22.981***
for this meal (0.003) (0.005) (4.204) (5.466)
Hundreds of kcal selected 0.007* 0.013* 15.594***
for this meal (0.004) (0.006) (3.752)
If this meal happens on a 0.006 0.002 -3.955 6.513
weekend (if yes = 1; if no = 0) (0.014) (0.039) (7.458) (8.236)
Item’s energy intensity -0.008* -0.018** 10.412*** 10.248***
(Kcal/gram) (0.004) (0.007) (1.431) (1.634)
Relative humidity–daily min -0.000 0.000 0.602*** 0.608***
(0.001) (0.001) (0.180) (0.188)
Hundreds Kcal from all the -- -- -2.478 = =
food items in this meal except for this particular item (2.188)
Food type (default = Dairy and Egg Products)
    Baked Products 0.013 0.050 59.806** 49.941**
(0.018) (0.044) (22.965) (18.363)
    Cereals and pasta 0.021 0.023 112.709*** 100.461***
(0.024) (0.036) (22.564) (21.283)
    Fast Food & Restaurant 0.062** 0.092* 192.551*** 117.023***
(0.029) (0.046) (17.419) (18.231)
    Fruits and Fruit Juices -0.002 0.004 -8.934 -7.706
(0.015) (0.042) (18.312) (18.605)
    Nut Seed Legumes 0.037 0.037 21.933 26.432
(0.027) (0.049) (22.920) (23.766)
    Oils Sauces Spices Herbs 0.044 0.114 -40.312*** -46.522***
(0.026) (0.068) (8.626) (6.971)
    Poultry Sausages Pork Beef Fish Lamb -0.009 -0.008 62.657*** 60.956***
(0.010) (0.030) (19.062) (15.526)
    Sweets 0.003 -0.002 26.013 14.097
(0.014) (0.035) (21.226) (14.582)
    Vegetables and Vegetable Products 0.014 0.004 -59.057*** -46.821***
(0.018) (0.030) (12.499) (15.264)
Meal (default = Breakfast)
    Dinner -0.003 0.016 43.775*** 21.508**
(0.016) (0.036) (13.567) (8.656)
    Lunch 0.026 0.074* 49.769*** 21.360*
(0.023) (0.043) (16.135) (10.508)
    Snack 0.018 0.039 4.422 14.028
(0.018) (0.039) (13.191) (11.488)
Constant -0.014 -0.047 81.791*** 74.860***
(0.037) (0.080) (23.884) (24.132)
Individual Fixed Effects Yes Yes Yes Yes
Study Day Fixed Effects Yes Yes Yes Yes
Observations 1,127 1,127 1,127 1,127
R-squared 0.216 0.231 0.407 0.469

OLS is Ordinary Least Squares. LPM is Linear Probability Model. Robust standard errors clustered at the subject level are in parentheses.