Potassium intake, skeletal muscle mass, and effect modification by sex: data from the 2008–2011 KNHANES

Nutrition Journal

Table 2 Odds ratios and 95% confidence intervals for low muscle mass with four levels of adjustment based upon potassium intake quintiles

	Model 1		Model 2		Model 3		Model 4
	ORs	95% CI	ORs	95% CI	ORs	95% CI	ORs	95% CI
Men
Quintile 1	Reference		Reference		Reference		Reference
Quintile 2	0.61	0.50–0.74	0.72	0.54–0.94	0.72	0.55–0.95	0.78	0.60–1.03
Quintile 3	0.50	0.41–0.60	0.62	0.48–0.81	0.64	0.49–0.83	0.71	0.54–0.93
Quintile 4	0.43	0.35–0.53	0.56	0.43–0.72	0.57	0.44–0.76	0.68	0.51–0.90
Quintile 5	0.35	0.28–0.42	0.52	0.40–0.67	0.55	0.40–0.75	0.71	0.51–0.98
Women
Quintile 1	Reference		Reference		Reference		Reference
Quintile 2	0.78	0.68–0.89	0.86	0.73–1.01	0.84	0.71–0.99	0.88	0.75–1.04
Quintile 3	0.79	0.69–0.91	0.92	0.78–1.08	0.88	0.74–1.05	0.97	0.81–1.16
Quintile 4	0.73	0.63–0.84	0.83	0.70–0.99	0.80	0.66–0.97	0.90	0.74–1.11
Quintile 5	0.71	0.61–0.83	0.77	0.64–0.93	0.72	0.57–0.91	0.87	0.68–1.12

Model 1 is adjusted for age and sex. Model 2 is adjusted for all variables included in Model 1, diabetes, hypertension, body mass index, smoking status, physical activity, white blood cell count, hemoglobin, and total cholesterol. Model 3 is adjusted for all variables included in Model 2, estimated glomerular filtration rate, and protein intake. Model 4 is adjusted for all variables included in Model 3 and total energy intake. Abbreviations: OR, odds ratio; CI, confidence interval

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