"disentangle the effect" is correct and usable in written English.
You can use this phrase to describe the process of analyzing and sorting through the causes and effects of a certain phenomenon. For example, "We need to disentangle the effect of the economic impact of the pandemic from the effect of other events in the stock market."
It is hard to disentangle the effect of any single crime-fighting technique.
The analysis here does not attempt to disentangle the effect of worker versus plant characteristics on wages.
Givnish says it's difficult to disentangle the effect of mountain-climbing from tree-climbing, because the vast majority of mountain species are also epiphytes.
As is often the case with legal interventions, it is not possible to disentangle the effect of helmet laws from accompanying efforts, such as educational campaigns.
Therefore, more work is required to disentangle the effect of the methodological choices to fully understand and reach firm conclusions about the cross-time trends of gender differences in variability and at the extreme tails of the distributions.
In order to disentangle the effect of immigrant peers from the crowding out effect of native peers with wealthy and educated parents, we also control for the family background of native peers (columns 5 and 6).
Second, in contrast to most of the literature on the topic (Edmonds 2007), our data allows us to disentangle the effect on the decision about market and domestic work.
Income, wealth and education are variables which exhibit a high positive correlation; it is important, therefore, to disentangle the effect that each one of them can have on the decision to hold stocks.
We generally do not control for race and ethnicity since it may be difficult to disentangle the effect of source country when controlling for race and ethnicity due to the strong correlation between the two.
In case efficiencies are present, it is possible to disentangle the effect of the increase in prices due to the internalization of competition between the merging firms and the effect of the synergies.
This article reports the results from a first experiment specifically designed to disentangle the effect of beauty from that of race in the observed labor market discrimination, for both females and males in Peru.
