Table 3.
Results of binary logistic regression and piecewise linear regression model. a
| Outcome: kidney stones | Adjusted OR (95% CI) | p-value |
|---|---|---|
| Fitting by binary logistic regression model | 1.01 (1.01, 1.02) | <0.001 |
| Fitting by piecewise linear regression model | ||
| Inflection point | 30 | |
| <30 | 1.02 (1.01, 1.02) | <0.001 |
| >30 | 0.99 (0.97, 1.00) | 0.081 |
| Log likelihood ratio test | 0.075 | |
OR, odds ratio; CI, confidence interval; PIR, poverty income ratio; BMI, body mass index; CVD, cardiovascular disease.
a
All models were adjusted for gender, age, race, PIR, BMI, education, marital status, smoking, alcohol, energy, HEI-2015, physical activity, gout, diabetes, hypertension, stroke, CVD, cancer, and year cycle.