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. 2021 Mar 16;101:102046. doi: 10.1016/j.foodpol.2021.102046

Table 4.

Impacts on Retail Price Premiums for Differentiated Eggs.

(1) (2) (3) (4)
Regression Results
Post-Estimation Tests
Variables Coefficient Std. Err. Coefficient Std. Err.
Credence Attributes
Cage-Free 0.74∗∗∗ (0.06)
COVID Interaction −0.34∗∗∗ (0.06)
Policy Interaction 0.14∗∗∗ (0.00) −0.20∗∗ (0.06)
Vegetarian-Fed 0.67∗∗∗ (0.05)
COVID Interaction −0.28∗∗∗ (0.05)
Policy Interaction 0.18∗∗∗ (0.00) −0.11 (0.05)
Omega-3 0.72∗∗∗ (0.05)
COVID Interaction −0.15∗∗ (0.05)
Policy Interaction 0.26∗∗∗ (0.00) 0.10 (0.05)
Organic 1.06∗∗∗ (0.06)
COVID Interaction −0.16 (0.06)
Policy Interaction −0.22∗∗∗ (0.00) −0.38∗∗∗ (0.06)
Product Color
Brown 0.14∗∗∗ (0.02)
COVID Interaction 0.13∗∗∗ (0.02)
Policy Interaction 0.08∗∗∗ (0.00) 0.21∗∗∗ (0.02)
Product Grade
AA −0.00 (0.02)
COVID Interaction −0.16∗∗∗ (0.02)
Policy Interaction 0.36∗∗∗ (0.00) 0.20∗∗∗ (0.02)
Size Traits
Medium −0.18∗∗∗ (0.02)
COVID Interaction 0.09∗∗∗ (0.02)
Policy Interaction −0.06∗∗∗ (0.00) 0.02 (0.02)
X-large 0.13∗∗ (0.03)
COVID Interaction 0.06 (0.03)
Policy Interaction 0.01∗∗∗ (0.00) 0.07 (0.03)
Constant 0.14∗∗∗ (0.03)

Year-Week Fixed Effects Yes
Regional Fixed Effects Yes
COVID∗Region Fixed Effects Yes
Policy∗Regional Fixed Effects Yes

Observations 10,378
R-squared 0.76

Robust standard errors in parentheses.

p<0.1

∗∗

p<0.05

∗∗∗

p<0.01