“…For stomach cancer, the range is 3-51% (Mikulin and Hardcastle, 1987;Haugstvedt et al, 1991;Wile et al, 1993) (70% in our sample). However, some authors cover all non-elective admissions (Holliday and Hardcastle, 1979;Nilsson et al, 1982;Brown et al, 1983;MacArthur and Smith, 1984;Mikulin and Hardcastle, 1987;Fielding et al, 1989;Ratcliffe et al, 1989;Haugstvedt et al, 1991;Porta et al, 1991;Anderson et al, 1992;Hargarten et al, 1992;Vineis et al, 1993;Wile et al, 1993;Curless et al, 1994;Mountney et al, 1994;Mulcahy et al, 1994;Scott et al, 1995) (as in the present study), while others distinguish urgent from true emergencies (Heys et al, 1994;West and Rosen, 1996).…”