The phrase "a rather high proportion" is correct and usable in written English.
It can be used when discussing statistics or quantities to indicate that a significant part of a whole is being referenced.
Example: "In the survey, a rather high proportion of respondents indicated that they preferred online shopping over traditional retail."
Alternatives: "a fairly large percentage" or "a significant share".
The city has a rather high proportion of both elderly residents and single-parent families compared with the Israeli and metropolitan averages.
The school's strategy is to admit a rather high proportion of people with non-traditional MBA backgrounds, but who have an entrepreneurial spirit and are able to embrace new opportunities in a quickly changing business landscape.
The powerful polymorphism/divergence approach provided evidence for adaptive evolution at a rather high proportion of the Or genes studied after relatively recent speciation events.
A rather high proportion of patients, approximately 55 60 %, were using prednisolone over the period.
Further computational analysis showed that leaderless genes are demonstrated with a rather high proportion in the archaeal Pyrobaculum aerophilum [ 11].
Given that only about 20% of such undeterminate thyroid lesions will be malignant, a rather high proportion of patients could have been dispensed from surgery.
One of the resulting four genptype combinations (Gen-4) was carried by 79.3% of the yellow testa accessions, a slightly lower proportion than was associated with a differently constituted haplotype [ 66]; at the same time, 77.4% of the black-seeded accessions carried Gen-1, a rather higher proportion than was recorded for the differently constituted haplotype [ 66].
A third implication, of the finding that all three instruments showed a fair validity, is that the three tested instruments could all be used to predict activity pattern in CFS patients, but that the rather high proportion of false predictions remains a serious problem that needs attention in future studies.
It is worth noting the rather high proportion of the floating population in urban single-person households in 2010.
The rather high proportion of unspecified carcinomas in women diagnosed shortly after birth, however, may reflect difficulties with classification of the tumor.
The rather high proportion of home-deaths (64.5%) in this subgroup of patients receiving home care during the last 4 weeks can be interpreted as a further indicator of a helpful and supportive professional care in the majority of patients.
