a decreasing trendP < 0.05
BUN levels also showed a decreasing trend from Q1 to Q4 (P < 0.05).
BUN levels also showed a decreasing trend from Q1 to Q4 (P < 0.05).
GLU levels did not exhibit a significant trend across the quartiles (P > 0.05).
Participants aged 60 and above exhibited a significant negative effect size (β = −2.6, 95% CI: −4.3 to −0.9, P = 0.004), whereas those below 60 showed an effect that did not reach statistical significance (β = −0.5, 95% CI: −2.1 to 1.2, P = 0.570).