Table 4.

Serum potassium values (mmol/l) in patients who were code positive and code negative for ICD-10 code E87.5 at presentation to the emergency department and at hospital admission according to different algorithms

	Emergency department				Hospital admission
		N	Median	IQR		N	Median	IQR
All diagnosis	No	64294	4.0	3.7–4.4	No	63957	4.1	3.8–4.5
	Yes	285	6.1	5.7–6.8	Yes	540	6.0	5.1–6.7
Main/most responsible diagnosis	No	64462	4.0	3.7–4.4	No	64430	4.1	3.8–4.5
	Yes	117	6.2	5.7–6.9	Yes	67	6.9	6.1–7.5
Preadmit diagnosis					No	64127	4.1	3.8–4.5
					Yes	370	6.3	5.5–6.9

ICD-10, International Classification of Diseases, 10th revision; N, number of patients.