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Sleep duration was measured by a question, constructed for the cohort study: How many hours do you usually sleep per night on… a) weekdays (work or study days)?, and b) weekends (days off)?
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In theory, the scientific method works like this: Researchers ask a question, construct a hypothesis, collect data, evaluate their results, and ta da!—the world gains valuable scientific insights.
Certainly, if more than one underlying factor had been found, we would have had cause to question construct validity.
The analysis revealed that even though there are three misfit questions, but overall, the reliability and quality of the exam questions constructed were relatively good and calibrated with students' learned ability.
This variable consists of questions constructed to capture attitudes towards short-term sickness absence, and it is precisely the self-certified and thus short-term absence where there is an association.
Although the tool employed close-ended questions constructed to elicit meaningful responses to the non-Portuguese speaker, patients would occasionally respond with long narratives that were incomprehensible to the clinician.
The questionnaire was based on a Health Canada survey with additional questions constructed by the investigators.
A single progress test consists of 200 multiple-choice questions, constructed by teaching faculty of all participating medical schools.
The interview will close with a few general questions, constructed to elicit participants' background, non-cardiac and cardiac medical history.
This was considered by those conducting interviews and the interview schedule questions constructed to minimise this risk.
At each participating medical school, the questions constructed by the school's faculty are reviewed by a committee.
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Justyna Jupowicz-Kozak
CEO of Professional Science Editing for Scientists @ prosciediting.com