"a significant negative relation" is grammatically correct and usable in written English.
It is typically used to describe a notable and noticeable connection between two things that is characterized by negativity or a lack of harmony. Example: There is a significant negative relation between smoking and lung cancer.
They observed a significant negative relation between the expression of RANKL and tumor necrosis factor-related apoptosis-inducing ligand (TRAIL) [ 21].
When considering job-specific characteristics, it turns out that the corporate hierarchy has a significant negative relation to overeducation.
Using a VEC model, (Shijaku & Kalluci 2014) find a significant negative relation between the stock of public debt and bank credit.
Previous studies show that the humanities scholars have a significant negative relation with ICT use; they are using it less than scientists and social scientists, and they demonstrate a significantly higher use of library facilities than other academics.
Using a sample of 3728 IPO observations from 22countries between July 1993 and December 2014, we find a significant negative relation between economic freedom and IPO underpricing after controlling for other commonly used firm-specific and macro control variables.
The fact that elections took place in the previous year generally is linked with increased reform activity, significantly so for Early Withdrawal schemes and reforms in the Wage Setting system, while a significant negative relation is found for Labour Taxation.
In addition to the left ventral striatum, this whole-brain regression analysis revealed a highly significant negative relation (p<.001) between AVS and activity in anterior insula and left midbrain, overlapping with the ventral tegmental area (VTA, Figs. 2ce and Table 2).
The results, both for the overall neighborhood and for separate land used types, show that only noise and air pollution demonstrate significant negative relations with property value.
Significant negative relations were clearly shown between metal concentrations and the RE % of the effluent COD upon exposure to four heavy metal mixtures (each contains the four tested metals) with elevated concentrations for 24 h.
As expected, posttraumatic stress and depression showed significant negative relations to QoL; in contrast, PTG was not significantly associated with QoL.
