Differences in the total, summed, and peak headache scores between the two study days were analyzed using Wilcoxon Pratt's test.
differences in the sum of internal and external rotational range (TRROM), and a combination of rotational ROM and torsional difference ("GIRD-torsion").
Group differences in the sum score will then reflect measurement bias instead of true underlying differences (Dolan 2000; Mellenbergh 1989; Meredith 1993; Millsap and Yun-Tein 2004).
After investigating MI with respect to sex, we look at sex differences in the genetic and environmental influences on the individual differences in the sum scores of the scales, given that MI is tenable (Lubke et al. 2004).
In order to address these research questions, the loneliness items must measure the same underlying trait across groups so that group differences in the sum scores only reflect group differences with respect to loneliness.
In the comparative locomotion- and hair coat questions, back radiology was a significant factor in explaining differences in the sum of scores: Patients with more radiological findings in the spine also had higher scores in the movement and coat related questions.
In addition, there were no differences in the sum of 37 PCBs (12 PCDD/F-like, 25 non-PCDD/F-like) in the aforementioned Danish-Finnish study in which placentas from mothers of 56 Finnish and 39 Danish cryptorchid and 56 Finnish and 129 Danish healthy children were analysed [ 30].
To identify significant differences in the sum of all significantly up- and down-regulated transcripts between treatments, significantly changed transcripts in one or more treatment, identified by the DESeq analysis, were transformed into a matrix with 1 = significantly up-regulated, −1 = significantly down-regulated and 0 = not significantly regulated transcript.
We did not observe substantial differences in the sum of parallel changes and reversals for RGC_CAs when the number of species varied between 14 and 19 (for 14, 15, 16, 17, 18, and 19 species the fraction of parallel changes and reversals were 0.08, 0.09, 0.08, 0.0.7, 0.10, and 0.08, respectively).
