Table 4.

Summary of serum potassium values during study period.

	Study cohort (n = 205)
Baseline	Mean (95% CI)		Median (IQR)	P value
K+ value *	5.73 (5.66–5.79)		5.6 (5.4–5.9)
K+ categories	n	%
K+ 5.1–5.4	64	31.2
K+ 5.5–5.9	91	44.4
K+ ≥6.0	50	24.4
K+ missing	0	0
Follow-up 1–30 d.
K+ value*	4.95 (4.86–5.05)		4.9 (4.6–5.4)
K+ change from baseline†	−0.81 (0.70–0.93)			<.01
K+ categories	n	%
K+ <3.5	1	0.5
K+ 3.5–5.0	82	40.0
K+ 5.1–5.4	32	15.6
K+ 5.5–5.9	28	13.7
K+ ≥6.0	3	1.5
K+ missing	59	28.8
Follow-up 31–91 d.
K+ value	4.93 (4.84–5.03)		4.9 (4.6–5.3)
K+ change from baseline	−0.81 (0.70–0.93)			<.01
K+ categories	n	%
K+ <3.5	1	0.5
K+ 3.5–5.0	92	44.9
K+ 5.1–5.4	31	15.1
K+ 5.5–5.9	17	8.3
K+ ≥6.0	9	4.4
K+ missing	55	26.8
Follow-up 92–182 d.
K+ value	4.9 (4.8–4.99)		4.9 (4.5–5.3)
K+ change from baseline	−0.84 (0.72–0.96)			<.01
K+ categories	n	%
K+ <3.5	2	1.0
K+ 3.5–5.0	104	50.7
K+ 5.1–5.4	31	15.1
K+ 5.5–5.9	19	9.3
K+ ≥6.0	10	4.9
K+ missing	39	19.0

IQR = interquartile range, K+ = serum potassium.

* Average of K+ values that were closest to the end of the baseline period/index date or closest to the end of the follow-up interval window. † Change of K+ values closest to the end of the follow-up interval and K+ values closest to the end of baseline period/index date.