From: Impacts of corn price and imported beef price on domestic beef price in South Korea
 | Level |  | First difference |  | ||
---|---|---|---|---|---|---|
Variable | Constant w/o trend | Constant with trend | Decision | Constant w/o trend | Constant with trend | Decision |
KORP | −1.89 | −2.96** | I(1)/I(0) | −17.48*** | −18.53*** | I(0) |
CORNP | −1.01 | −1.74 | I(1) | −10.75*** | −10.87*** | I(0) |
AUSP | 0.32 | −3.44** | I(1)/I(0) | −12.36*** | −12.54*** | I(0) |