"substantive effects" is a correct and usable phrase in written English.
This phrase is used to refer to important or meaningful outcomes or results which are achieved. For example: The substantive effects of the new training program have been evident in employees' increased productivity.
Did the news media's initial depiction of the caucus results have any substantive effects?
While that case represented a major shift in US supreme court doctrine, however, the substantive effects of the shift have been relatively modest – and make the New York and Connecticut regulations plausibly constitutional.
But when the substantive effects and political realities of large-scale reductions are examined, it becomes clear that there would not be sufficient savings to reduce tax rates and also cut the deficit.
The risk of substantive effects occurring, however, is high.
As all variables are relatively scaled, we can interpret magnitude and substantive effects across OLS β coefficients.
These substantive effects of state changes on economic decisions perhaps reflect shared evolutionarily conserved neurobiological mechanisms.
The move would have no substantive effect on AT&T's operations or finances.
And that intimacy has had, I think, a substantive effect on the peace process and how it's being conducted.
While the establishment of the investigative body is unlikely to have any substantive effect, it could still benefit both parties.
In societies where insurance is not a norm, this instantly impoverishes families, and the knock-on effect has a substantive effect on national GDP.
It might have been the case that in the past, when resources were scarcer, factors like birth order had a more substantive effect.
