The phrase "allowed a distinction between" is correct and usable in written English.
It can be used when discussing the permission or acceptance of differentiating between two or more concepts, categories, or groups.
Example: "The study allowed a distinction between qualitative and quantitative research methods, highlighting their unique contributions."
Alternatives: "permitted a differentiation between" or "enabled a separation between".
Indigenous microflora dynamics allowed a distinction between two composting main phases, thermophilic and maturation, which characterise of the progression of the composting process.
The difference between the double sd (0.14) of two regions allowed a distinction between these regions.
In this view, it is also of note that previous research with the HCL-32 has not consistently allowed a distinction between BP I and BP II [ 1, 5, 27] (but see also [ 3]).
One important strength of the present study was the opportunity to include two different questions about physical activity, which allowed a distinction between exercise and total physical activity (obtained in all domains) in a random sample representative of the entire Swedish population in working ages.
This has been found to be sufficient to give rise to magnetically split Mössbauer spectra that allow a distinction between magnetite and maghemite and to determine their relative amounts in a sample.
In the last decades, several studies have attempted to identify the electrophysiologic markers that could allow a distinction between VM and other vestibular disorders.
The data provide us with information on the types of training at the respective establishments allowing a distinction between external courses, internal courses, and on-the-job training.
Similarly, the survey allows a distinction between training that is solely employer-financed and training that includes a financial contribution by employees towards the training costs.
Unlike our case, the authors use data that allow a distinction between unemployment and nonparticipation, but the logistic models that they use do not control for unobserved heterogeneity, a shortcoming which could significantly bias the estimates of duration dependence.
Despite this, we suggest assessing the noradrenaline response in follow-up studies, which would allow a distinction between secretion mechanisms governed mainly by the adrenal glands (adrenaline) or secretion by sympathetic nerve endings (noradrenaline).
Though more complicated that a causal theory of knowledge, Nozick's (1981) "tracking" account of knowledge also allows a distinction between beliefs which noninferentially track facts and beliefs which inferentially track facts.
