Table 3.
Cross-sectional associations of dietary potassium intake with serum potassium levels
| Analyses | N | Difference in Serum Potassium in mEq/L (95% Confidence Interval) | Odds Ratio (95% Confidence Interval) |
|---|---|---|---|
| Association of dietary potassium intake (g/d) with serum potassium level (or concentration) in mEq/L, continuous outcome | |||
| Unadjusted | 2355 | 0.011 (−0.003 to 0.020) | |
| Adjusted for Ca | 2355 | 0.02 (−0.01 to 0.05) | |
| Adjusted for C and food groupsa | 2355 | 0.03 (−0.01 to 0.07) | |
| Association of dietary potassium intake (g/d) with hyperkalemia, binary outcome | |||
| Defined as ≥5.5 mEq/L | |||
| Adjusted for C a | 2355 | 1.05 (0.95 to 1.15) | |
| Adjusted for C and food groups a | 2355 | 1.05 (0.92 to 1.21) | |
| Defined as ≥6.0 mEq/L | |||
| Adjusted for C a | 2355 | 1.04 (0.90 to 1.20) | |
| Adjusted for C and food groups a | 2355 | 1.11 (0.89 to 1.37) | |
a
Set of covariables C included: age, sex, smoking status, body mass index, physical activity, presence of a life partner, Charlson comorbidity index, history of cardiac disease, history of diabetes, history of cancer, listed for transplant, type of vascular access, body weight decrease during hemodialysis session, number of minutes of hemodialysis per week, hemodialysis vintage, Kt/V, receiving angiotensin-converting enzyme inhibitors or angiotensin II receptor blockers, serum albumin, and total energy intake.