The phrase "a crucial variable for" is correct and usable in written English.
It can be used when discussing an important factor or element that influences a particular outcome or situation.
Example: "In this experiment, temperature is a crucial variable for determining the reaction rate."
Alternatives: "an essential factor for" or "a key element for".
The equity risk premium is a crucial variable for anybody who needs to work based on actuarial assumptions and therefore with an expected return.
The power angle, which is a crucial variable for the excitation control, is not assumed to be available for feedback, as mechanical power is also considered as an unknown variable.
Recent data suggest that interoception (perception of bodily signals) and interoceptive sensitivity (sensitivity for internal signals) might be a crucial variable for the regulation of behavior associated with feelings of satiety.
Inflation is a crucial variable for people with disabilities or special needs because they often have higher health care costs, and medical inflation is typically much higher than the overall inflation rate, said Mike Duckworth, a Merrill Lynch adviser in Pittsburgh.
Jobs are a crucial variable for the Communist Party leadership of China, especially in preparations for its once-a-decade handing over of power — an event scheduled for this autumn that the government is determined to hold against a backdrop of social stability and economic prosperity.
At a local (fine spatial) scale, the literature generally shows that small businesses and non-profit organizations do not recover from major disasters [14], citing the ability, or rather the inability, to adapt as a crucial variable for these small businesses to recover [20].
In this context, it has been demonstrated that, for the health workforce in particular, working time is a crucial variable.
Management is a crucial variable.
How the military feels about Musharraf and the elections is also a crucial variable.
Among many benefits, a crucial variable cost, credit losses, will decline.
Thus a crucial variable before last November's election was the racial composition of the electorate.
