Suggestions(1)
Exact(4)
Additionally, the alpha scores over 0.90 suggest that there may be redundancy in the DREEM items, as items that correlate strongly with each other can inflate the score.
In addition, we have only reported items that correlate significantly with a particular component (i.e. with loadings greater than 0.50) as long as they do not also load high on other components (the difference being greater than 0.20).
Principal component analysis with varimax and oblimin rotation was performed on variables of intensity and frequency of symptoms (mean intensity and number of days with symptoms, respectively) to identify items that correlate strongly enough to form homogeneous domains.
Look for small items that correlate with your dresses, larger decorations, program, invitations and reception.
Similar(56)
Following published conventions [ 31- 36], item-to-scale correlations (corrected for overlap) were considered satisfactory for items that correlated.40 or more with their hypothesized scale.
Internal consistency of the D1 and D2 scales was assessed using the Cronbach alpha measure; corrected item-total correlations (CITCs) and item-level α were also calculated to identify items that correlated weakly with the overall total.
On the other hand, any items that showed high intercorrelations (r > 0.7) [6] were examined and the least clinically sensible item was excluded, as theoretically items that correlated too highly are measuring the same underlying dimension [8].
This identified components constructed from items that correlated with each other, or clustered together.
Based on the item correlations among the RD items with the Extraversion items from the NEO-PI-R and EPQ in the HBCS, PAGES and QIMR adults cohorts, we decided to include a subset of RD items that correlated strongest with the Extraversion items (see Supplementary Fig. 3 for number of items included and Supplementary Table 2 for overview of the items).
Items that had a low item to total correlation of <0.4 were deleted [ 34, 36]; f) Multi-trait analysis (MAP) [ 37] was carried out to identify items that correlated higher with other I, A, P total(s) than with the total of the hypothesised construct minus the item with such items being deleted.
A 15-item version was presented by Sheikh and Yesavage (1986), based on the items that correlated best with depressive symptoms, and was equally successful as the 30-item version in differentiating between those with and without depression among people aged 55 years and over and living in the community (Sheikh & Yesavage, 1986).
Write better and faster with AI suggestions while staying true to your unique style.
Since I tried Ludwig back in 2017, I have been constantly using it in both editing and translation. Ever since, I suggest it to my translators at ProSciEditing.

Justyna Jupowicz-Kozak
CEO of Professional Science Editing for Scientists @ prosciediting.com