Overview and examples of successful harmonized and inferred units. (A) Percentage of values with harmonized and inferred units by measurement variable. Roughly half of the data had correct units and did not require conversion (light green), while half of the data had their units inferred (blue). A minority of values had units that needed conversion (dark green), and the smallest group of data had nonsensical or mislabeled units (black). (B) Original units and their values for body weight and harmonized data for body weight. (C) Inferred versus observed harmonized value distributions.