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Table 3 Utilize the two-segment piecewise linear regression model for the analysis of threshold effects between NHHR and nephrolithiasis

From: The association between non-high-density lipoprotein cholesterol to high-density lipoprotein cholesterol ratio (NHHR) and kidney stones: a cross-sectional study

Adjusted

 

OR (95% CI)

P value

Nephrolithiasis

  

Fitting by standard linear model

1.04 (1.00, 1.08)

0.037

Fitting by two-piecewise linear model

  

<3.17

1.15 (1.04, 1.27)

0.0076

>3.17

1.00 (0.95, 1.06)

0.9566

Log-likelihood ratio

0.039

 

Nephrolithiasis recurrence

  

Fitting by standard linear model

1.09 (1.03, 1.14)

0.0025

Fitting by two-piecewise linear

  

<5.43

1.15 (1.06, 1.25)

0.0009

>5.43

0.99 (0.87, 1.13)

0.8860

Log-likelihood ratio

0.070

 
  1. Adjusted for sex, age, race, educational level, marital status, Poverty Income Ratio (PIR), Body Mass Index (BMI), vigorous activity, moderate activity, hypertension, diabetes, alcohol and smoking habits