Table 1. Demographics before propensity score matching - comparisons of experimental cohorts 1-3 vs control cohort 4 low normal potassium (sK 3.5-4.5).

Cohort		Hypokalemia (N=53,401) cohort 1		High normal potassium (N=61,096) cohort 2		Hyperkalemia (N=30,831) cohort 3
		Patients (%)	p-value	Patients (%)	p-value	Patients (%)	p-value
1-3	Age at index	53,401 (100%)	<0.001	61,096 (100%)	<0.001	30,831 (100%)	<0.001
4(Control)		205,648 (100%)		205,648 (100%)		205,648 (100%)
1-3	Male	28,939 (54.2%)	<0.001	39,380 (64.5%)	<0.001	19,718 (64.0%)	<0.001
4		126,110 (61.3%)		126,110 (61.3%)		126,110 (61.3%)
1-3	Female	24,148 (45.2%)	<0.001	21,084 (34.5%)	<0.001	10,851 (35.2%)	<0.001
4		77,286 (37.6%)		77,286 (37.6%)		77,286 (37.6%)
1-3	Not Hispanic or Latino	44,065 (82.5%)	<0.001	49,716 (81.4%)	0.002	24,688 (80.1%)	0.003
4		166,165 (80.8%)		166,165 (80.8%)		166,165 (80.8%)
1-3	White	38,628 (72.3%)	<0.001	45,096 (73.8%)	0.007	21,516 (69.8%)	<0.001
4		152,917 (74.4%)		152,917 (74.4%)		152,917 (74.4%)
1-3	Black or African American	9,043 (16.9%)	<0.001	9,364 (15.3%)	0.017	5,636 (18.3%)	<0.001
4		30,714 (14.9%)		30,714 (14.9%)		30,714 (14.9%)
1-3	Unknown Ethnicity	7,100 (13.3%)	<0.001	8,788 (14.4%)	0.18	4,588 (14.9%)	0.195
4		0,028 (14.6%)		30,028 (14.6%)		30,028 (14.6%)
1-3	Unknown race	4,641 (8.7%)	0.490	5,416 (8.9%)	0.039	3,034 (9.8%)	<0.001
4		7,679 (8.6%)		17,679 (8.6%)		17,679 (8.6%)
1-3	Hispanic or Latino	2,236 (4.2%)	<0.001	2,592 (4.2%)	<0.001	1,555 (5.0%)	0.001
4		9,455 (4.6%)		9,455 (4.6%)		9,455 (4.6%)
1-3	Asian	798 (1.5%)	0.079	907 (1.5%)	0.043	470 (1.5%)	0.318
4		3,292 (1.6%)		3,292 (1.6%)		3,292 (1.6%)
1-3	American Indian or Alaska Native	254 (0.5%)	0.163	271 (0.4%)	0.674	149 (0.5%)	0.193
4		886 (0.4%)		886 (0.4%)		886 (0.4%)
1-3	Native Hawaiian or Other Pacific Islander	37 (0.1%)	0.525	42 (0.1%)	0.475	26 (0.1%)	0.703
4		160 (0.1%)		160 (0.1%)		160 (0.1%)