Table 1.

Classification of diet groups by the number of time(s) foods were consumed/week^*

	Vegan (n 8)	Lacto-ovo vegetarian (n 48)	Semi-vegetarian (n 45)	Peso-vegetarian (n 74)	Regular meat eater (n 8927)
Number of time(s)/week consumed:
Beef, veal, chicken, lamb, pork, bacon, ham, corned beef, luncheon meats or salami, sausages or frankfurters	0	0	≤1	0	0 or≥1
Fish, steamed, grilled, or baked; fish, fried (include take-away), fish, tinned (salmon, tuna, sardines etc.)	0	0	0 or≤1	≥1	0 or≥1
Total of above categories	0	0	≤1	≥1	>1
Usual eating habits†:
Milk, cheese, ice-cream, yoghurt	Nil	Y	N/A	N/A	N/A
Butter, butter and margarine blends	Nil	Y	N/A	N/A	N/A
Eggs	Nil	Y	N/A	N/A	N/A

N/A is not used for coding into diet groups.

^*DQES items were converted to weekly equivalents by assigning scores to each frequency category. With ‘1 time/week’ receiving a score of 1, and the remaining responses calculated as a factor of 1.

^†Only habitual intake (and not frequency) of these foods was required for classification of vegan and lacto-ovo vegetarian. Frequency on intake was not provided for butter and butter and margarine blends in the DQES.