Urinary sodium-to-potassium ratio associates with hypertension and current disease activity in patients with rheumatoid arthritis: a cross-sectional study

Table 4 Multivariate analysis for independent factors associated with DAS28-ESR

Dependent variables	Independent variables	Estimates	Std. Error	95%CI		P value
Dependent variables	Independent variables	Estimates	Std. Error	Lower	Upper	P value
DAS28-ESR	Sex (male)	−0.58	0.14	− 0.85	− 0.31	< 0.0001
	Prednisolone (+)	0.48	0.12	0.23	0.72	0.0001
	Urinary Na/K ratio	0.11	0.030	0.048	0.170	0.0004
	Age (1 year)	0.0150	0.0046	0.0055	0.024	0.0016
	RF (1 IU/mL)	0.00054	0.00019	0.00017	0.00091	0.0042
	Biological agent (+)	−0.23	0.098	−0.42	−0.033	0.021
	Anti-CCP antibody (10 U/mL)	0.00	0.00	0.00015	0.0048	0.037
	BMI	−0.024	0.014	−0.050	0.0029	0.081
	eGFR (1 ml/min/1.73m²)	0.0051	0.0030	−0.00084	0.011	0.092
	Smoking (+)	−0.18	0.19	−0.54	0.19	0.34
	MTX (+)	−0.0058	0.12	−0.23	0.22	0.96

Results of multiple regression analysis adjusted for urinary Na/K ratio and other variables including sex, age, RF, anti-CCP antibody, smoking status, current therapeutics (the use of Methotrexate, Prednisolone, and biological agents), eGFR, and BMI
Abbreviations: DAS28-ESR 28-Joint Disease Activity Score using erythrocyte sedimentation rate, RF rheumatoid factor, anti-CCP antibody anti-cyclic citrullinated peptide antibody, BMI Body mass index, eGFR estimated glomerular filtration, MTX methotrexate, CI confidence interval

ISSN: 1478-6362