**Symptom duration items were modified into eligibility criteria for tool administration.
bFor the two studies for which the measurement purpose was undetermined, duration items were not assessed.
The frequency and duration items of auditory hallucination load on a physical factor as in previous studies.
aWhether or not duration items were measured was undetermined for four studies owing to the lack of information reported in the reviewed articles.
Beliefs and expectations regarding treatment: items of the revised Illness Perceptions Questionnaire (IPQ-R) [ 26] supplemented with specific questions on treatment expectations Illness perceptions (including personal control and expectations regarding duration, items from IPQ-R)[ 26].
In order to evaluate the variations in the use of the GSLTPAQ, information concerning the item content (frequency items only vs. frequency and duration items), the recall period (typical or last week vs. other recall timeframes), and scoring methods (LSI, frequency/week, minutes/week, METs × hours/week, percentage meeting PA guideline, and other measurement units) were retrieved.
The WHEL Study assessed physical activity with nine questions from the Women's Health Initiative on usual physical activity (recreational walking and light, moderate, and vigorous physical activity) using a standard frequency-by-duration item format [ 27].
42 As the sample size used in this study was 250, eight items: two items on study duration, four items on the funder/sponsor of the study and two items on the number of study participants with factor loadings of <0.3, were deleted.
Only the duration between item onset and response (i.e. not the entire 9 seconds) was modeled for the fMRI analysis.
Thus, as the duration between item and probe increases, one might expect that the amount bottom-up trace reactivation declines, placing a greater burden on prefrontal retrieval processes.
