TABLE 4.

Dietary potassium intake and mortality¹

Study (reference)	Summary of results	Statistics as provided by the article
Araki et al. (20)	Higher potassium is beneficial; highest quartile had lowest all-cause mortality	HR (95% CI): 0.71 (0.56, 0.90)
He et al. (23)	Neutral; not associated with all-cause mortality; 95% CI across all quartiles crossed 1	HR (95% CI) Q4 vs. Q1: 0.89 (0.64, 1.23)
Leonberg-Yoo et al. (25)	Lower potassium is harmful; all-cause mortality average follow-up 19.2 y (10.8–20.6 y); lower quartiles higher risk for mortality	HR (95% CI) Q1 vs. Q4: 1.71 (1.23, 2.38)
Nagata et al. (28)	Moderate potassium is beneficial; death—comparing reference category of <1.5 g to 2.0–2.5 g and 2.5–3 g, lowest risk in higher quintiles	HR (95% CI): 0.36 (0.19, 0.70)

¹Q, quartile or quintile.