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Both the mean and the median differences were significantly different from zero (p < 0.01, by Student's t and Wilcoxon matched pair test).
However, the Wilcoxon Signed Rank Test showed the median differences were not significantly different from zero.
The median differences were 0.56 mm in the mandibular arch and 0.25 mm in the maxillary arch.
Group differences were assessed using unpaired t-test (single comparison) or ANOVA/linear regression (multiple comparisons/change with time) with the exception of individual worm mtDNA copy number, which failed normality test and, therefore, median differences were analysed using non-parametric test (Mann-Whitney test).
Median differences were tested with the Mann-Whitney U test.
Median differences were expressed with an interquartile range.
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These median differences are displayed graphically in Figure 1.
Median pre- and post-treatment SUVmax and median difference were 14.5, 3.9, and -63.7%, respectively.
Among region, the median difference is only 3pt.
Over the last decade, the median difference was about 0.4 percentage point, according to Bloomberg News.
Surprisingly, the average difference between the university at which the respondent was studying at or had graduated from, and the one they chose was just two places (the median difference was four).
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