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In case of analyzing two groups, statistical difference was determined by the unpaired two-sided Student's t-test (parametric) or the unpaired two-sided Mann-Whitney U-test (non-parametric).
Two-way analysis of variance was used when analyzing two groups of data, each having two data columns.
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The Student's t-test was used to analyze two groups' comparisons.
They analyzed two groups of patients with adolescent idiopathic scoliosis, one fused and the other braced, and compared those with an age and sex-matched control group.
We analyzed two groups, one with an immune disorder, on multiple topical and systemic medications, and another relatively healthy population on few or no medications.
We analyzed two groups of children separately.
We retrospectively analyzed two groups of consecutive patients undergoing cardiac surgery with cardiopulmonary bypass between August 2004 and June 2006.
Nonparametric analysis of longitudinal data was carried out to analyze two groups differentiated by SAPS II (Group 1: ≤ 45 points, Group 2: >45 points).
We initially analyzed two groups of control mice, MHC-MerCreMer and Sf/Sf, and observed no phenotypic differences between the two (supplementary material Fig. S1).
To evaluate the evolution of renal failure, we analyzed two groups of patients: those with normal kidney function and those with RIFLE class 'risk' on admission.
The author also analyzed two groups of artistic models: drawings by Leonardo da Vinci (the Vitruvian Man) and Greek sculptures (photographs taken at the National Archeology Museum of Athens).
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