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Choosing pattern 3 or 4 was followed by the items: "How often do these attacks typically occur while awake?
Self-reports of weight and height were collected by the items "How much do you weigh without clothes?" (in kg).
These are the items: "How many times do you pause to ask for questions [during class]?" and "Fraction of typical class time spent lecturing?" We particularly recognized the limitations of the first question but decided to keep it, because it is meaningful, and there is value to encouraging instructor reflection on this specific item.
A factor analysis using Varimax rotation with Kaiser Normalization defined 2 independent factors: attention- and conduct problems, both with an Eigenvalue > 1. Attention problems include the items how often "do you have trouble concentrating in class" and "don't manage to be calm in class".
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Age was determined by the item, "how old are you?" and cross-checked with self-reported year of birth.
Smoking status was assessed with the item "How many cigarettes do you usually smoke per day?", coded as none, 1─10, 11─20, >20 for the analyses.
One participant misunderstood the item "How difficult was it to stay asleep?" confusing it with difficulty falling asleep.
Satisfaction with the general practitioner was measured using the item "How do you rate the overall medical care received in the last 12 months by your general practitioner?".
Closeness was measured with the item: "How close do you feel to this person?" (1 = very distant to 5 = very close).
The item ' How many weeks do you intend to exclusively breastfeed your infant?' was used to measure intentions at a ratio level.
In regression analyses, job satisfaction was operationalized using the item How satisfied are you with your current job in this hospital?
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Justyna Jupowicz-Kozak
CEO of Professional Science Editing for Scientists @ prosciediting.com