The use of summary index scores rather than multiple scale scores simplifies data analysis and the interpretation of findings from clinical trials and aids in comparisons across studies [ 9].
For some domains, we will explore the computation of summary indices, such as the disease activity score developed by Mal-ED using 3 intestinal inflammatory markers [ 10], which has been adopted by other groups [ 41], or an "enteropathy index" [ 20].
We attempted to study the effect of each tie separately, but due to sample size limitations, we were forced to use summary indexes across all relationships.
Given that any one of these dichotomous indicators may not be sufficient to distinguish between facilities with relatively high vs. low levels of information use, summary indices were created by aggregating the indicators and through Principal Components Analysis (PCA).
Splunk handles volumes of data nicely, and when the volumes get really big, you can use its summary indexing capabilities to speed up queries.
We saw no difference between treatment arms for either overall patient rated quality of life using the summary index (−0.38 points, 95% confidence interval −2.58 to 1.81; P=0.73) or the mobility domain (−1.43, −8.03 to 5.18; P=0.67).
Scores on 19 tests are used to create summary indices of global cognitive function and five specific cognitive domains: episodic memory, semantic memory, working memory, perceptual speed, and visuospatial ability.
Scores on 19 tests were used to create summary indices of global cognitive function and five specific cognitive abilities (i.e., perceptual speed, working memory, episodic memory, semantic memory, and visuospatial function), as previously described [ 20, 21].
We used the summary index developed by Diez-Roux [ 19] as a measure of neighborhood deprivation.
The objective of this study is to assess feeding practices of HIV exposed infants using summary index and its association with nutritional status in Southern Ethiopia.
