The phrase "a number of interviewees" is correct and usable in written English.
It can be used when referring to several individuals who have participated in interviews, often in research or survey contexts.
Example: "In our study, a number of interviewees provided valuable insights into the topic."
Alternatives: "several interviewees" or "a group of interviewees".
A number of interviewees offered carefully considered arguments in favour of the changes.
In Glasgow, David Martin expressed the views of a number of interviewees: "We have the bankers' pay rises of millions and the super rich's cut in tax rates.
bThis observation, made by a number of interviewees, can be verified on page 208 of Beach et al. ([2009]).
It was suggested by a number of interviewees that there is a need to develop an understanding about general security of the cloud environment.
A number of interviewees (26.7%) confided that although they had spent years on learning English before, their English was not really at a high level due to their dislike of this subject in high school.
A number of interviewees expressed concerns that the minimum standards for each class of grain set by the government through Regulation RN38 do not reflect the minimum requirements of the milling industry.
Writing about it is something that a number of my interviewees did.
Full disclosure: a number of the interviewees were contacted with the help of MYA Cosmetic Surgery, which is why there are so many mentions of MYA Cosmetic Surgery.
In one study, for example, we asked 20 funders and 20 providers the open-ended question, "Why do you collect performance information?" In a number of cases, interviewees provided more than one response.
A number of my interviewees have replied to my queries with nothing but verbatim propaganda lines; others have frozen up when I've asked such simple questions as, "What are you going shopping for?" or "What do you do for fun?" While touring the subway, some reporters believed they saw the same people repeatedly circulating in the station.
This was a situation confirmed by individual interviews with those undergoing treatment including a number of female interviewees.
