Table 3. Association between the degree of salty preference and IPSS grade.

Salty taste preference	IPSS grade (mild, moderate, severe) (ref = mild)
	Model I					Model II
	OR	Linearized SE	P value	95% CI		OR	Linearized SE	P value	95% CI
Neutral	1.00	(Ref)				1.00	(Ref)
Blandly	1.06	0.05	0.21	0.97–1.16		1.08	0.05	0.11	0.98–1.18
Salty	1.48	0.06	<0.01	1.37–1.60		1.46	0.06	<0.01	1.35–1.57
Threshold (moderate)	3.54	0.16	<0.01	3.23–3.86		3.86	0.17	<0.01	3.53–4.19
Threshold (severe)	5.62	0.16	<0.01	5.30–5.94		5.95	0.17	<0.01	5.61–6.28

The KCHS as a sample survey was analyzed by study subject and with applied weight calculated in production of the sample design weight and benchmark weight. Strata with single sampling unit centered at overall mean. Sample size =86,637, weighted =16,608,187. Model I adjusted for age, marital status, education level, household income, residence, hypertension, diabetes mellitus, and dyslipidemia. Model II additionally adjusted for breakfast eating, intake of fruit, and intake of vegetable. IPSS, International Prostate Symptom Score; OR; odds ratio; CI, confidence interval; SE, standard error; ref, reference.