I am so glad this forum is available because I have searched high and low for the correct--perhaps "preferred" is more appropriate?-- way to write the sentences below. These sentences are scattered throughout a manuscript being prepared for submission to a scientific peer-reviewed journal. I have eliminated ("...") specific information in these sentences for brevity.

Might someone confirm whether it would be appropriate/preferred to omit the "that" in the following sentences and provide the rationale for each decision?

Thank you!!


Several studies have examined the level of health services in areas of high … morbidity and found that most facilities do not offer routine … screening.

Another key finding was that nearly half of the subjects were released within two days …

Most reported that no services are offered because subjects are transported elsewhere for services.

The remainder of facilities indicated that services were not needed…

Most facilities reported that testing was available upon subject request or if …

Moreover, nearly 60% of the facilities surveyed reported that no ... services were provided…
Structurally, all your that's can be omitted. Some should remain, as they make the thrust of the sentence more clear, but it is the writer's choice. Keeping that is more formal.
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Many thanks for your response. Do you know where might I find a reference citing that retaining them is more formal?
That is my observation; you may quote me.