Decide one of three items.
Share a total of five items.
The SF-12 aims to measure health-related quality of life and consists of 12 items which are aggregated to eight subscales of which four consist of one item each and the other four of two items each.
Direct non-health care costs were the result of aggregating three items: non-health care transportation, social care services (formal care) and caregiver's time (informal care, provided by non-professional caregivers, who are often relatives, but could also be friends or neighbours and who are not paid for the care provided).
The items are aggregated into two dimensions, (1) Pain severity index, using the sum of the four items on pain intensity, and (2) Function interference index, using the sum of the seven pain interference items [ 18, 24, 25].
The differences between items help identify aspects that need improvement.> The howRwe score is the aggregate of the four howRwe items.
For example, component 2 'Pain Information' had six adherence items with a maximum 'raw' score of 12 (6×2), the total aggregate six item score for this component was divided by six.
When analysing and interpreting the 10 value dimensions of the PVQ, only three items that belong to collectivistic values have been aggregated into one factor, and those are "Conformity", "Security" and "Tradition".
By calculating the correlation coefficient between single score and aggregate score, we found that the correlation coefficient between single scores of the second, twentieth, and thirty-fourth items and the aggregate score were less than 0.4, so these three items were included in deletion list.
The index was constructed by allocating equal weight to each of the six items and aggregating a score for each country, with higher scores indicating a more 'enabling' environment conducive to evidence-based public health approaches.
If the same study reported three items assessing marijuana use, these three items were aggregated for the marijuana analysis.
