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. Author manuscript; available in PMC: 2011 Mar 1.
Published in final edited form as: Circ Heart Fail. 2010 Jan 26;3(2):253–260. doi: 10.1161/CIRCHEARTFAILURE.109.899526

Table 4.

Serum potassium <3.5 mEq/L and outcomes in patients with chronic HF and CKD

Events (%); rate per 10,000 person-years Absolute rate difference* (per 10,000 person-years) HR (95% CI) P value
Outcomes Serum potassium 4–4.9 mEq/L (N=65) Serum potassium <3.5 mEq/L (N=65)
Mortality
All-cause 25 (38%); 1276 36 (55%); 2236 + 961 2.07 (1.12–3.83) 0.021
Cardiovascular 19 (29%); 969 27 (42%); 1677 + 708 2.09 (1.02–4.29) 0.044
Progressive HF 9 (14%); 459 20 (31%); 1242 + 783 2.83 (1.12–7.19) 0.028
Hospitalization
All-cause 52 (80%); 5714 55 (85%); 8209 + 2495 1.18 (0.71–1.95) 0.523
Cardiovascular 44 (68%); 3894 44 (68%); 5116 + 1222 1.29 (0.76–2.20) 0.347
Worsening HF 30 (46%); 1974 33 (51%); 2821 + 847 1.24 (0.65–2.34) 0.517
*

Absolute differences in rates of events per 10,000 person-years of follow-up were calculated by subtracting the event rates in the serum potassium 4 to 4.9 mEq/L group from the event rates in the serum potassium <3.5 mEq/L group.