The phrase "a proportion of valid" is correct and usable in written English.
It can be used when discussing a specific fraction or percentage of something that is considered valid or acceptable within a certain context.
Example: "A proportion of valid responses were collected during the survey, indicating a strong interest in the new product."
Alternatives: "a share of valid" or "a fraction of valid".
On the other hand, a single offer restriction facilitated a higher proportion of valid agreements and reduced rent extraction and, as a result, the agency's payment.
Implementation of LPA is anticipated to lead to a more rapid turnaround time, and a higher proportion of valid results, as well as eliminating the need for cold storage (unless culture is also to be performed on the same specimens).
Consequently, studies with a low proportion of valid outcome data may be prone to selection bias, and as information on the family status of the participants with missing accelerometer data is rarely provided, comparability of the study results may be hampered.
"Since roughly the beginning of 2017, due to evolution of the HRC-S gain, (tg_lam,pi) background filtering has been rejecting an increasing proportion of valid longest-wavelength positive order events.
Overall, an acceptable proportion of valid results was obtained.
All percentages were calculated as a proportion of the number of valid responses, which are indicated in brackets.
When health problems that were generated and pre-validated through the electronic prescriptions (14%) are excluded, the proportion of valid health problems drops to 59%.
Figure 2 shows the eligible cohort response rates (derived as the number of valid responses as a proportion of the total number of students eligible to respond) by year, for the CMSQ and the EQ. To date the overall eligible cohort response rate is 91% at commencement of medical school, and 83% at completion of medical school.
It is currently unknown which task(s) yields the largest proportion of valid and systematic data using standard criteria (Johnson & Bickel, 2008).
