The phrase "a consistent relation" is correct and usable in written English.
It can be used when discussing a stable or reliable connection between two or more entities, such as in scientific, mathematical, or social contexts.
Example: "The study found a consistent relation between exercise frequency and overall health outcomes."
Alternatives: "a stable connection" or "a reliable association".
A major goal in this field of applied research is to find out if the desirable material density, the roller-integrated stiffness-measurement, and the in-situ elastic parameters of compacted materials could have a consistent relation.
Finally, we found a consistent relation between the structure and functional diversity of bacterial community, which further showed the important role that the assemblage of microbial communities might have over their functioning.
A report from the APA task force on violent media concludes: "The research demonstrates a consistent relation between violent video game use and increases in aggressive behaviour, aggressive cognitions and aggressive affect, and decreases in pro-social behaviour, empathy and sensitivity to aggression".
"The research demonstrates a consistent relation between violent video game use and increases in aggressive behaviour, aggressive cognitions and aggressive affect, and decreases in pro-social behaviour, empathy and sensitivity to aggression," said the report.
In summary, our study did not confirm a consistent relation between common genetic variation in ERCC6 and AMD.
There was little evidence of a consistent relation between IQ and blood pressure.
6 Several recent reviews have now shown a relatively consistent relation between shorter sleep duration and increased risk of overweight in childhood, particularly in younger children.
Most importantly, there was a strong consistent relation of low homoarginine concentrations with indicators of impaired cardiac function, including an increased prevalence of CHF and left ventricular hypertrophy as well as incrementally increasing levels of brain natriuretic peptide at lower levels of homoarginine.
These prospective data from a large study of diverse community dwelling adults with or at high risk of knee osteoarthritis showed a significant and consistent relation between greater time spent in light intensity activity and a reduced risk of development or progression of disability.
All gaseous pollutants except ozone showed a positive and consistent relation with ischaemic stroke (appendix 7).
Nutritional status has a strong and consistent relation to death from respiratory infections.
