Table 4.

Changes in serum potassium values from baseline period in 3 follow up interval including days 1 to 30, 31 to 91, and 92 to 182.

No. of patients	n = 458
Baseline	Mean (95% CI)	Med (IQR)	P value
K+ value	5.91(5.85–5.97)	5.8(5.5–6.3)
K+ categories	n (%)
K+ 5.1–5.4	106 (23.1)
K+ 5.5–5.9	186 (40.6)
K+ ≥6.0	166 (36.2)
K+ missing	–
Follow up 1–30 d	Mean (95% CI)
K+ value	4.94 (4.86–5.03)	4.9(4.4–5.4)
K+ change from baseline	−1.02 (0.92–1.11)		< .01
K+ categories	n (%)
K+ <3.5	4 (0.87)
K+ 3.5–5.1	171 (37.3)
K+ 5.1–5.4	61 (13.3)
K+ 5.5–5.9	51 (11.1)
K+ ≥6.0	20 (4.4)
K+ missing	151 (33)
Follow up 31–91 d	Mean (95% CI)
K+ value	4.89(4.8–4.98)	4.8(4.3–5.3)
K+ change from baseline	−1.04 (0.93–1.14)		< .01
K+ categories	n (%)
K+ <3.5	11 (2.4)
K+ 3.5–5.1	208 (45.4)
K+ 5.1–5.4	58 (12.7)
K+ 5.5–5.9	40 (8.7)
K+ ≥6.0	34 (7.4)
K+ missing	107 (23.4)
Follow up 92–182 d	Mean (95% CI)
K+ value	4.88(4.8–4.96)	4.9(4.4–5.3)
K+ change from baseline	−1.05 (0.96–1.14)		< .01
K+ categories	n (%)
K+ <3.5	6 (1.3)
K+ 3.5–5.1	201 (43.9)
K+ 5.1–5.4	72 (15.7)
K+ 5.5–5.9	51 (11.1)
K+ ≥6.0	21 (4.6)
K+ missing	107 (23.4)

Serum K+ concentration values were those closest to the end of the baseline period and follow up intervals. Change of K+ values is the average difference in K+ concentration between the baseline value and each follow up intervals value.

CI = confidence interval, IRQ = interquartile range, K+ = potassium.