The phrase "a unique predictor of" is correct and usable in written English.
You can use it when discussing a specific factor or variable that is believed to have a distinct and significant influence on an outcome or result.
Example: "In our study, we found that age is a unique predictor of health outcomes in older adults."
Alternatives: "a distinct indicator of" or "a singular determinant of".
Appreciation: Individual differences in finding value and meaning as a unique predictor of subjective well being.
"Appreciation: Individual Differences in Finding Value and Meaning as a Unique Predictor of Subjective Well‐Being". Journal of Personality, 73 (1), 79-114.
The present study indicates that undernutrition is associated with, but not proven to be a cause of, poorer clinical outcomes in SCI patients with serum albumin concentration as a unique predictor of adverse clinical outcome.
An alternative model, grouped according to response mode, showed that the production of a verbal response was a unique predictor of decoding beyond matched tasks without a verbal response.
Thus, the findings from the present study suggest that CUD may be a unique predictor of suicide attempts among Iraq/Afghanistan-era veterans; however, a significant limitation of the present study was its cross-sectional design.
In addition, sexual harassment was a unique predictor of VA service use for women, whereas non-White race was predictive of VA service use for men only.
Consistent with the extant literature across civil and forensic samples, patients in this study who absconded were more likely to have a history of problematic substance use, as well as a history of attempted absconding (although this latter variable did not emerge as a unique predictor in the context of regression analysis).
Contrary to hypotheses, only the need for perfectionism/certainty obsessive belief domain emerged as a significant unique predictor of BID.
Results indicated that patient recurrence status was not a significant unique predictor of physical health or immune function; rather, among all spouses, cancer-specific stress symptoms were associated with increased physical symptoms and altered T-cell blastogenesis.
Results indicated that morphological awareness was a significant unique predictor of reading comprehension.
Of the three socio-demographic variables, being not in the workforce was a significant unique predictor of non-improvement.
