Table 4
Breslow-Day test for homogeneity of the odds ratio for an abnormal CT scan
Symptom
χ
2
Value
DF
p Value
Headache (Jeret, Miller, Haydel)
25.087
2
0.001
Headache (Jeret, Haydel)
4.188
1
0.041
Vomiting
3.371
2
0.185
Nausea
1.466
1
0.226