The phrase "a significant variable for" is correct and usable in written English.
It can be used in contexts where you are discussing factors that have a notable impact on a particular outcome or phenomenon.
Example: "In this study, we found that temperature is a significant variable for the growth rate of the plants."
Alternatives: "an important factor for" or "a key determinant for".
Neither BMI nor type of DVT prophylaxis was a significant variable for occurrence of in-hospital complications in our study.
Current and former agricultural land uses were identified as significant explanatory variables for eight of the 11 target contaminants, while elevated nitrate was a significant variable for five contaminants.
Urban air temperature is considered a significant variable for a variety of urban issues, and analyzing the spatial patterns of air temperature is important for urban planning and management.
Gender, however, was not a significant variable for DP.
In contrast, race was a significant variable for this study.
Receipt of trastuzumab after BM was a significant variable for survival in HER2+ patients.
Day was a significant variable (p<0.001) for all ducks and dependent variables (except for the heart rate of M2).
Multiple regression analysis showed that the type of medical institutions remained as a significant variable only for the aspect of patients' worries about their health.
In the multivariate model, the type of institutions (clinic/hospital) remained as a significant variable only for the patients' worries about their own health.
Simple linear regression analysis revealed that neither baby's weight, nor maternal age or parity is a significant variable when assessed for total charges.
It is observed from the figure that 'Green labeling and use of green packaging material' is a very significant variable for effective customer involvement in green concept implementation in SC as it comes at the base of the ISM hierarchy.
