Table 3.

Association between BRI quartiles and eGFR in different participants.

Variable	BRI Quartiles
	Q1 OR(95%CI),P value	Q2 OR(95%CI),P value	Q3 OR(95%CI),P value	Q4 OR(95%CI),P value	P-value for trend	P for interaction
Gender						<0.001
Women	1.0	1.200(0.653-2.205)	1.724(1.122-2.648)*	2.699(1.484-4.908)**	0.001
Men	1.0	0.911(0.557-1.493)	1.043(0.549-1.982)	2.427(1.616-3.645)**	0.032
DM history						0.056
No	1.0	0.818(0.643-1.042)	1.108(1.002-1.278)*	1.227(1.011-1.346)*	0.008
Yes	1.0	0.874(0.8121.304)	1.131(1.107-1.156)**	1.522(1.138-2.465)**	<0.001
Age, years						0.143
<60	1.0	0.767(0.335-1.755)	1.468(1.021-2.135)*	2.147(1.097-4.205)*	0.006
≥60	1.0	1.085(0.706-1.669)	1.404(1.033-2.120)*	2.563(1.742-3.771)**	<0.001
Blood pressure, mmHg						0.024
SBP<120 and DBP<80	1.0	0.858(0.286-2.571)	1.496(1.016-3.173)*	2.854(1.033-4.687)*	<0.001
120≤SBP<140 and/or 80≤DBP<90	1.0	1.067(0.733-1.554)	1.692(0.865-3.253)	2.983(1.160-4.718)*	0.026
SBP≥140 or DBP≥90	1.0	1.188(0.778-1.813)	2.306(1.489-3.572)***	3.677(1.842-6.697)***	<0.001
Smoking habits						0.068
No	1.0	0.877(0.798-0.964)	1.132(1.003-2.134)*	1.394(1.054-1.845)*	0.002
Occasionally	1.0	0.654(0.360-1.188)	0.931(0.053-1.699)	0.969(0.553-1.169)	0.320
Usually	1.0	1.187(0.916-1.539)	1.305(1.004-1.697)*	1.583(1.069-2.132)*	0.004

*: P-value <0.05; **: P-value <0.01; ***: P-value <0.001.

adjusted for age, sex, centres, smoking habits, drinking habits, CHD history, DM history, FBG, TG, LDL, TC, SBP, and DBP.

OR, odds ratio; CI, confidential interval; BRI, body roundness index; eGFR, estimated glomerular filtration rate; CHD, coronary heart disease; DM, diabetes mellitus; FBG, fasting blood glucose; TG, triglycerides; TC, total cholesterol; LDL, low-density lipoprotein cholesterol; SBP, systolic blood pressure; DBP, diastolic blood pressure.