The I 2 statistic was employed to assess heterogeneity, and the following guidelines were followed: 0% to 40% may not be significant; 30% to 60% may indicate moderate heterogeneity; 50% to 90% may represent significant heterogeneity; and 75% to 100% would consider considerable heterogeneity. 11 The publication bias was not assessed since this review only involved seven studies, and it was unreliable to test.
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Far-infrared therapy on arteriovenous fistula among hemodialysis patients: A systematic review and meta-analysis.
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