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Table 3 Five different approaches for handling input data

From: Common clinical blood and urine biomarkers for ischemic stroke: an Estonian Electronic Health Records database study

  1. (1) Binary statements whether or not an analyte was measured. (2) Binary statements were equalized within cases and controls. (3) Medical reference values were utilized; each value was marked as below, within, or above the reference norm. (4) Absolute values were used. (5) z-scores were used (adjusted for sex and age)