The phrase "a borderline effect in" is correct and usable in written English.
It can be used in contexts where you are discussing the impact or influence of something that is on the edge or threshold of a particular condition or effect.
Example: "The study revealed a borderline effect in the participants' responses, indicating that the treatment may have had a minimal but noticeable impact."
Alternatives: "a marginal effect in" or "a threshold effect in".
RV size had a borderline effect on survival in those who survived past 1 year (P = 0.067, data not shown).
Smirnakis et al. studied a population of women with a history of GDM in Massachusetts, US, and found that practice site had a borderline effect on postpartum screening in univariate analysis, but not after adjustment for potential confounders [ 45].
In contrast, a recent meta-analysis of stop-signal studies found a borderline effect of gender, whereby behavioural inhibition in male ADHD patients (compared with male healthy controls) was more severely impaired than in female ADHD patients (compared with female healthy controls) (Lipszyc and Schachar, 2010).
In multivariable analysis a borderline effect of PI on TC/HDL ratio is observed, suggesting a partially unrelated to ART pathogenesis of lipid changes in HIV-infected women.
This may not be relevant for primary endpoints in phase III, but in other situations E-R analyses may assist in concluding if a borderline effect is real.
Combined to a borderline effect towards a higher risk of anaemia in infants born to IL-10 −1082 GA and AA mothers compared to GG ones (OR = 1.81, P = 0.06), this effect persisted in infants issued from mothers carrying one or two copies of IL10-ATA haplotype compared to mothers without the IL10-ATA haplotype (OR = 1.45, P = 0.04).
A borderline effect was found between the -238 SNP and HAQ score and radiological damage in patients with 2 to 10 years of DD.
Mean foveal thickness and MMFT were significantly higher in parous than in nulliparous women, and age-adjusted ANOVA for MMFT revealed a borderline effect of parity.
A borderline effect was found for the Bekaa region versus Beirut.
There was also a borderline effect of group, F 1, 21) = 4.21, p =.053.
