Table 3.

Use of hormone replacement therapy by diet group of women in the EPIC-Oxford study

Diet group	Participants answering the relevant question, n*	Participants answering in the affirmative, n (%)*	Prevalence ratio (95% CI)*
Meat eaters	6911	3098 (44.8)	1.00 (ref)
Fish eaters	1614	541 (33.5)	0.80 (0.73 to 0.88)
Vegetarians	1778	541 (30.4)	0.74 (0.68 to 0.81)
Vegans	188	31 (16.5)	0.42 (0.30 to 0.60)
			P heterogeneity <0.0001

*Number answering the relevant question and n (%) answering in the affirmative were as observed. Prevalence ratios were adjusted for age at follow-up (50–54, 55–59, 60–64, 65–69, 70–74 years), region of residence (eight regions) and self-reported current health (excellent, good, fair, poor, unknown). Included postmenopausal women aged 50–74 who answered the relevant question on the second (10-year) follow-up questionnaire.