Table 1
Results of search strategy
Author
Study design
Size of cohort
CT abnormality rate (%)
Neurosurgical intervention rate (%)
Jeret
et al
1993
Prospective cohort
712
9.4
0.28
Miller
et al
1997
Prospective cohort
2143
6.4
0.2
Haydel
et al
2000
Prospective cohort
520
6.9
0.4