The phrase "a more direct correlation" is correct and usable in written English.
It can be used when discussing the relationship between two variables or factors, indicating that the connection is clearer or stronger than before.
Example: "The recent data shows a more direct correlation between exercise and improved mental health."
Alternatives: "a clearer relationship" or "a stronger link".
Ann Daly, who oversees animation and home video for DreamWorks, says that there "is a more direct correlation between DVD sales and the academy campaigns than academy campaigns and the box office".
She says she initially used block-based coding tutorials, which worked fine but has transitioned to Swift Playgrounds because there is a more direct correlation between common tasks and coding.
This work represents (1) a more direct biochemical determination of contractile protein concentration in whole myocardium and (2) a more direct correlation of the biochemical assay for collagen with histological data than have been reported previously.
There is a more direct correlation of small-bowel tethering and unresectable disease, thus the higher score for this finding.
Nevertheless, the fact that we did not directly assess CAN and venous compliance obliterates a more direct correlation with our positive findings.
A more direct correlation between PDGFRα expression levels and the propensity of prostate cancer cells to colonize the skeleton was derived from experiments that were conducted using two sub-lines originally obtained from the PC3 parental population.
The plot of the coherent domain size versus the monomeric sugar yields shows a much more direct correlation between milling and saccharification yield than was observed for particle size and surface area.
Likely future directions for this line of research include more direct correlations of axon geometry with functional architectures, investigations of microcircuitry at the level of electron or confocal microscopy, anatomical and functional investigations of connectional convergence and interactions, and, not least, a more comprehensive database.
Later surveys showed more direct correlations between carbonaria frequencies and both sulfur dioxide and to a lesser extent soot pollutants (Kettlewell 1973; Lees and Creed 1975; Steward 1977; Bishop et al. 1978a) and a negative correlation between carbonaria frequency and lichen (Bishop 1972).
