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A brief summary of the harmonization steps.
| Data preprocessing | Data analysis | Results |
|---|---|---|
| • Quality control | • Discriminant analysis | • Metabolite annotation |
| • Metabolite centering and scaling | • Correlation analysis | • Minimum reporting requirements |
| • Metabolite transformation | • Pathway analysis | • Meta-data |
| • Calculation of biomarker performance | ||
| • Multiple testing correction | ||
| • Validation of results |
