. 2007 Jun 26;98(9):1439–1446. doi: 10.1111/j.1349-7006.2007.00533.x

Table 2.

Adjusted odds ratios (OR) relating associations with dietary folate intake for risk of head and neck squamous cell carcinoma

Folate intake (µg/day)	Cases/controls	OR ^† (95% CI)	P‐value
Tertile 1 (133.0–265.0)	111/237	1.00 (reference)
Tertile 2 (265.9–345.2)	67/237	0.55 (0.34–0.88)
Tertile 3 (345.2–975.1)	54/236	0.53 (0.32–0.89)	0.02
Unknown	5/1

^†

OR was matched for age and sex and adjusted for drinking habit, smoking habit, non‐alcohol energy intake, multivitamin use, dental brushing and referral pattern to our hospital. CI, confidence interval.