The phrase "although there were marginal" is grammatically correct and can be used in written English.
It is typically used to introduce a contrast or exception regarding something that is considered marginal or minimal in significance or impact.
Example: "Although there were marginal improvements in the project's efficiency, the overall results were still disappointing."
Alternatives: "even though there were slight" or "despite the minimal".
Although there are marginal changes that could be made to fully fund ERS, we at the Texas Public Policy Foundation believe the best long-run approach is to convert it from a defined benefit plan to a defined contribution plan, putting the power back in the hands of its members and off the backs of taxpayers.
There was marginal association between StO2 measures and haemodynamic changes although all analyses resulted in areas under ROC curves <0.70.
There was marginal benefit of adding carbonaceous materials.
There are marginal con stituencies where immigrant votes could be decisive.
Although there was a marginal improvement of three percentage points in the number of Greeks who also thought the economy would get better (16%), a total of 97% believed that the overall state of their country's finances was bad and 60% (compared to 29%in the rest of the bloc) believed that employment would get worse.
In addition, the two-point slopes of PPD did not have significant differences in cooling and heating (P ≥ 0.10, Fig. S10b and Table S6 in Supplementary Information), although there was a marginal difference at session 5 in heating (session 5: Z = 10, p = 0.098, Fig. S12b and Table S8 in Supplementary Information).
"Future prospects look dismal too with an accelerated reduction in new orders and although there was a marginal rise in employment, it is difficult to see how this will be sustained".
No significant relationship between disturbance and total diversity was observed in Virginia (although there is a marginal significance for total species richness – Table 3).
Although there was a marginal increase in median score on the behaviour checklist and impact of epilepsy scale, these differences were not significant (p=0.354 and 0.550, respectively).
