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Significant group differences in the GPx activity were assessed using the chi-square test and the independent-samples median test, whereas for GSH and the GSH:GSSG ratio, the t-test for independent samples and analysis of variance (ANOVA) were used

[DOI] [PubMed] [Google Scholar] 269.Fan X.-P., Ji X.-F., Li X.-Y., Gao S., Fan Y.-C., Wang K

Perioperative analgesic studies in humans are currently few, with some studies failing to show benefit, and others demonstrating an opioid-sparing effect

2007 [5] Rushworth GF, Megson IL

A supplement may sound promising on paper, but if the body does not absorb it well, the result may be less reliable

The second way of assessing changes during the treatment period compared the measurements between the baseline and the last treatment visit (i.e., 24-week visit)