“…Previous studies on socioeconomic differences in vegetable consumption have used different dietary assessment methods, such as food records (Roos et al, 1996;Lynch et al, 1997;Groth et al, 2001;Hulshof et al, 2003), 24 h recalls (Popkin et al, 1996;Lallukka et al, 2001;Giskes et al, 2002;Agudo et al, 2002a) and food frequency questionnaires including varying number of items (Prattala et al, 1992;Smith and Baghurst, 1992;Osler, 1993;Shimakawa et al, 1994;Hjartaker and Lund, 1998;Fraser et al, 2000;Mishra et al, 2002;Perrin et al, 2002;Dynesen et al, 2003). Our data included answers to one frequency question on consumption of fresh vegetables.…”