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The examiners in the present study were physiotherapists and trained in using the measurement device before the study begun.
Before the study begun, all healthcare professionals in participating centres were given identical training about the sensitivity and specificity of rapid diagnostic tests, alternative causes of febrile illness, and the Ghana national guidelines, which indicate presumptive treatment for children under 5 years of age (that is, the treatment is assigned without carrying out a diagnostic test).
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This was then compared to the rating they had given before the study began.
Two in the Truvada group turned out to have been infected before the study began.
And it was not one of the two "primary" measures designated by Costa before the study began.
Critics of the study wonder why so many more women in the screening group turned out to have had a diagnosis of breast cancer before the study began.
On average, the addicts used an average of four grams a week and said they had been high on 19 of the 30 days before the study began.
Participants registered their sympathies before the study began and their exposure to advertising was then monitored, and voting behaviour tracked after the election.
This suggests that design features chosen before the study begins might lead to a certain kind of finding about adverse effects.
Before the study began, both groups were told that placebos were "inert or inactive pills, like sugar pills, without any medication in them".
It seemed a common experience that no one had any idea before the study began what his or her caloric requirements were.
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Justyna Jupowicz-Kozak
CEO of Professional Science Editing for Scientists @ prosciediting.com