NIROANon-Injecting Routes of Administration (drugs)
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Both NIROA and ROA for the low insider group exceed that of the high insider group for years +1, +2, and +3 relative to year -1.
The only difference between the two groups is for the median change in NIROA in years +1 and +2 relative to year -1, which is 0.
After including the two interaction terms (WD98_CEO and WD98_LOSS), the coefficient on WD98 becomes insignificant, which suggests that the association between the voluntary write-down and NIROA improvement does not exist for firms without CEO changes or big losses.