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Comparison between electrocardiography (ECG)-based potassium (K+) prediction and laboratory (LAB) K+ in the validation cohort. Each line represents a hypokalemia case. The patients with absolute error (AE) greater than 0.3 are colored red, and the others are colored green. The t test shows the mean AE (MAE) differences are not significantly different for thyrotoxic periodic paralysis (TPP) vs non-TPP (P = .409).
