Table 5.

Prevalence of Oxalobacter formigenes Among 240 Controls According to Dietary Factors

	O. formigenes positive
Nutrient mg/day	No.	(%)	Crude OR	MVOR (95% CI)
Oxalatea
<115	19/60	(32)	1.0b	1.0b
115–169	23/60	(38)	1.3	1.3 (0.5–3.0)
170–239	25/60	(42)	1.5	1.6 (0.6–4.1)
≥240	27/60	(45)	1.8	2.1 (0.8–5.7)
Calcium
<550	23/58	(40)	1.0b	1.0b
550–819	25/63	(40)	1.0	0.7 (0.3–1.7)
820–1199	24/58	(41)	1.1	0.7 (0.2–1.7)
≥1200	22/61	(36)	0.9	0.6 (0.2–1.7)
Vitamin C
<75	23/61	(38)	1.0b	1.0b
75–139	23/61	(38)	1.0	0.7 (0.3–1.8)
140–244	24/59	(41)	1.1	1.0 (0.4–2.6)
≥245	24/59	(41)	1.1	0.8 (0.3–2.2)
Magnesium
<235	22/60	(37)	1.0b	1.0b
235–319	24/58	(41)	1.3	1.1 (0.4–3.2)
320–419	29/62	(47)	1.6	1.1 (0.3–3.8)
≥420	19/58	(33)	0.9	0.3 (0.1–1.4)

^aTest for trend, p = 0.14.

^bReference category.