Table 5.

Multivariable adjusted linear regression models for explanation of eGFR and Ln CRP by individual components of CKD diet score among participants of the German Chronic Kidney Disease (GCKD) observational cohort study (2012–2014).

CKD diet score componentsa	eGFR			Ln CRP
	β-coefficient	SE	P value	β-coefficient	SE	P value
Sodium (per 1-SD increase)	−0.284	0.443	0.522	−0.035	0.025	0.156
Potassium (per 1-SD increase)	1.465	0.649	0.024	−0.010	0.036	0.776
Fiber (per 1-SD increase)	1.206	0.491	0.014	−0.100	0.028	<0.001
Total protein (per 1-SD increase)	−0.855	0.639	0.181	0.025	0.036	0.480
Sugar (per 1-SD increase)	−0.469	0.452	0.300	−0.001	0.025	0.969
Cholesterol (per 1-SD increase)	−0.760	0.558	0.173	0.097	0.032	0.002

BMI body mass index, eGFR estimated glomerular filtration rate, CRP C-reactive protein, SD standard deviation.

^aEach component of CKD diet score was added individually into the model (not adjusted for the other food components), adjusting for gender, age, BMI, caloric intake, smoking, alcohol consumption, school education, and physical activity. CRP concentrations were log transformed due to skewed data, and one unit was added prior to log transformation to avoid loss of data when log(0) is rendered as missing.

Bold P values indicate statistical significance.