Table 1 Association of individual risk factor with development of severe radiation-induced carotid stenosis (F refers to Fisher’s exact test, t refers to t-test)
| Â | Â | No/mild/moderate | Severe | P value |
|---|---|---|---|---|
Sex | Female | 50 | 3 | Â |
| Â | Male | 124 | 12 | 0.564 (F) |
Cholesterol | Normal | 124 | 12 | Â |
| Â | High | 39 | 3 | 1.000 (F) |
Glucose | Normal | 149 | 12 | Â |
| Â | High | 14 | 3 | 1.000 (F) |
Smoking | No | 126 | 11 | Â |
| Â | Yes | 48 | 4 | 0.939 (F) |
Cerebrovascular | No | 171 | 13 | Â |
symptoms | Yes | 3 | 2 | 1.000 (F) |
Hypertension | No | 167 | 13 | Â |
| Â | Yes | 7 | 2 | 1.000 (F) |
Age | Mean ± SD (years) | 51.14 ± 9.52 | 61.13 ± 7.13 | <0.0005 (t) |
RT duration | Mean ± SD (years) | 6.47 ± 3.15 | 11.53 ± 5.17 | <0.0005 (t) |