Table 13

Time intervals for parallel trend testing

t−2t−1t1t2t3t4t5t6
VariablesD−2D−1D1D2D3D4D5D6
Day(−90, −60)(−60, −30)(30,60)(60,90)(90,120)(120,150)(150,180)>180

Note(s): The table presents the time dummies and their corresponding time periods for parallel trend testing

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