The phrase "a definite association between" is correct and usable in written English.
It can be used when discussing a clear or specific relationship or connection between two or more entities or variables.
Example: "The study revealed a definite association between high stress levels and decreased immune function."
Alternatives: "a clear link between" or "a strong correlation between".
However, there is a definite association between economic factors associated with Bt. cotton farming and farmer-suicide.
Interestingly, there was a definite association between CREB1 loss and poor OS (Additional file 3: Figure 3).
(d) Rapid and robust genotyping methods can establish a definite association between a haptoglobin genotype and a disease state.
In contrast to the study conducted by Mounzer and coworkers [ 17], this study could not replicate a definite association between plasma gelsolin levels of admission and mortality.
Independent studies are required before it may be concluded that there is a definite association between the TNFRII 196R allele and RA diagnosis.
Despite the metabolic benefits of La− production now being widely recognised, there is a definite association between elevated blood [La−] and impaired exercise performance [ 16].
Some investigators reported that very high ferritin levels may suppress antibody production following influenza vaccination in HD patients [ 29], but our results and other investigators have not found any definite association between iron status and seroconversion rate.
Naranjo scores of 9 or higher imply a definite association, scores of 5 to 8 a probable association, scores of 1 to 4 a possible association, and scores of 0 make an association doubtful.
Our results for thyroid cancer were in line with a pooled risk analysis which, based on 13 studies, observed no definite association between use of exogenous hormones and thyroid cancer (La Vecchia et al., 1999).
49 Additionally, results from an analysis of a national integrated claims database showed that patients with type 2 diabetes had a two-fold higher risk of pancreatitis and that there was no definite association between exenatide use and increased incidence of pancreatitis.
