“…Estimations of SCI incidence vary widely, from 8 to 58 SCI persons per million inhabitants per annum (Table 1). Three types of parameters can account for such wide differences: 12 1978-1981 Taiwan 14.6 R, postinjury acute care Gehrig and Michaelis (1986) 13 1960-1967 Switzerland 13.4 R, postinjury acute care, multicentre Biering-Sorensen et al (1990) 24 1975-1984 Denmark 9.2 R, PMR, multicentre Garcia et al (1991) 25 1984-1985 Spain 8 R, PMR, multicentre Acton et al (1993) 14 1980-1989 USA (Arkansas) 28.5 R, postinjury acute care, multicentre Price et al (1994) 15 1988-1990 USA (Oklahoma) 40 R, postinjury acute care and PMR, multicentre Thurman et al (1994) 16 1989-1991 USA (Utah) 43 R, postinjury acute care and PMR, multicentre Knutsdottir (1993) 17 1973-1982 Iceland 24 P, postinjury acute care and PMR [1983][1984][1985][1986][1987][1988][1989] 18 P, postinjury acute care and PMR Lan et al (1993) 18 1986-1990 Taiwan (rural areas) 56 R, postinjury acute care, multicentre Shingu et al (1994) 4 1990 Japan 39.4 R, postinjury acute care and PMR, multicentre 50. 5 Inclusion of forms of ASIA E Soopramanien (1994) 5 1992-1993 Romania 18.5 R, postinjury acute care, 1 unit 28.…”