Table 3.

Adjusted Odds Ratios for Incident Calcium Kidney Stones According to Dietary Intake a) before and b) after removing the matched pair with outlying oxalate intake

a) Nutrient	OR	95% CI	p-value
Zinc (mg)	0.87	0.75–0.99	0.04
Phytate (mg)	0.99	0.99–1.00	0.03
Sodium (mg)	1.00	1.00–1.001	0.18
Protein (g)	1.01	0.99–1.03	0.38
Calcium (mg)	1.00	0.99–1.001	0.84
Oxalate (mg)	0.99	0.99–1.00	0.03
b) Nutrient	OR	95% CI	p-value
Zinc (mg)	0.84	0.73–0.97	0.02
Phytate (mg)	0.99	0.997–1	0.05
Sodium (mg)	1	1–1.001	0.19
Protein (g)	1.01	0.99–1.03	0.26
Calcium (mg)	1	0.99–1.00	0.73
Oxalate (mg)	1.00	0.99–1.00	0.11

Models included all three dietary recalls for each subject and were adjusted for phytate, sodium, total protein, calcium, and oxalate intake.