Table 5 Multivariable-adjusted odds ratios (95% CIs) for kidney stone across quartile categories of uPDI score.

From: A cross-sectional study of the association between plant-based diet indices and kidney stones among Iranian adults

 

Quartiles of uPDI

p trend

Q1 (n = 2368)

Q2 (n = 2252)

Q3 (n = 2899)

Q4 (n = 2320)

Kidney stone (n)

391

366

463

393

 

Crude

1.00

0.98 (0.84–1.14)

0.96 (0.83–1.11)

1.03 (0.88–1.20)

0.79

Model 1a

1.00

0.95 (0.81–1.11)

0.90 (0.77–1.04)

0.94 (0.80–1.10)

0.33

Model 2b

1.00

1.03 (0.87–1.21)

1.02 (0.87–1.20)

1.13 (0.95–1.35)

0.21

Model 3c

1.00

1.03 (0.87–1.21)

1.03 (0.88–1.20)

1.14 (0.95–1.35)

0.18

  1. aModel 1: adjusted for age and sex.
  2. bModel 2: further adjusted for place of residence, SES, marital status, education, smoking, alcohol, physical activity, energy, salt intake, water intake, diabetes, high blood pressure, cardiovascular diseases, cancer.
  3. cModel 3: further adjusted for BMI.
  4. uPDI unhealthful plant-based diet index.
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